Our recommendations are made independently through Research & Testing. We may receive commissions from purchases made via our links.
Toshiba AC25CEW-BS vs Mueller 4 Slice Toaster Oven Side-by-Side Comparison




Our Verdict
- Performance (50%)7.7/10
- Design (25%)7.5/10
- Usability (25%)6.8/10
- Performance (50%)7.0/10
- Design (25%)5.3/10
- Usability (25%)5.2/10
The battles between the Toshiba AC25CEW-BS Convection Toaster Oven and the Mueller 4 Slice Toaster Oven (MT-175) is one of the occasions where size matters. It’s an interesting faceoff where the first one is our best value toaster oven overall and the second one our best value pick for the small category.
Comparing the two highlights the common limitation of a small machine—the lack of features. The Mueller, similar to many other same-sized units, simply has three control dials and comes with no additional accessories beside an oven rack and baking pan.
Meanwhile, the Toshiba’s control panel has an LCD combined with three control knobs for accurately adjusting its cooking function, timer, and temperature. The oven also comes with a total of five accessories including a rotisserie kit and a rack clamp.
Credits where credits due, the Mueller has a high build quality equal to the Toshiba, shown in tits thick casing and firm control dials. Moreover, it has a detachable crumb tray that makes cleaning the inside easier—something usually tricky for small units.
Knowing the limitation from its size, the Mueller’s performance was the reason we gave it its title. It had a high score in toasting bread, equal to the Toshiba. Nonetheless, having a convection system simply gave the Toshiba the edge in getting the right color and texture when baking pizza, whole chicken, and fries.
Toshiba AC25CEW-BS Toaster Oven Performance
- Toast (40%)7.2/10
- Pizza (25%)9.1/10
- Whole Roasted Chicken (25%)7.8/10
- Baked French Fries (10%)6.1/10
- Toast (40%)7.5/10
- Pizza (25%)7.6/10
- Whole Roasted Chicken (25%)7.0/10
- Baked French Fries (10%)3.6/10
Toast




- Function: Toast
- Number Of Slices: 4
- Toast Level: 4/6
- Cooking Time: 3m 55s
- Second Batch: 3m 55s
- Convection: No
Following the procedures of our Toast test, we determined that level 4—3 minutes 55 seconds on the timer—was the best option with the score of 7.3/10. The level 3 and 5, in addition to being lighter and darker than ideal respectively, had very uneven surface color.
The toast level 4 of the Toshiba produced four pieces with a light golden brown color but a few areas too light. Due to not having the convection fan running, the color was about 80% even and we could only give it an 8/10.
The first batch of toast was nicely crispy while soft and moist inside so we gave it a 7.5/10 for taste. Our head chef Tuyet Pham determined that it would be great to go with omelet and eggs benedict, as well as good for sandwiches. Although it may not be particularly good for soup, the second batch was.
The second batch was browner and crispier while still being moist so it got a 6.5/10. If you want the second batch to be the same as the first, remember to lower it by one level.




- Function: Toast
- Number Of Slices: 4
- Toast Level: ⅓ to Dark
- Cooking Time: 4m
- Second Batch: 4m
- Convection: No
For our Toast test, we started off by trying the Medium Toast setting which was around 3 minutes 5 seconds on the timer. The four pieces of bread on the upper tray level came out only lightly toasted on top except for one golden brown piece. We then cranked it up to the Dark Toast setting—around 4 minutes 50 seconds on the timer—which, unfortunately, burnt the toast a bit.
Finally, we opted for the middle ground which was 4 minutes on the timer—⅓ of the rotation from Medium to Dark. This setting was tricky to get right on the time dial, so we used an external timer. It gave us the best possible toast results from this oven scoring a 7.5/10 in total.
After 4 minutes of toasting, the four pieces of toast had pretty good surface color. However, the colors varied from light golden to golden brown on both the top and the bottom, so we could only give a 7/10.
Luckily, the varied colors partially meant varied textures which were all good and deserving an 8/10. The golden brown areas had a more crispy outside while the light golden areas had a softer inside. Our head chef Tuyet Pham determined that it would go great with omelets, eggs benedict, and sandwiches but not so much with soup.
After taking out the first batch, we immediately put four more pieces inside to test the oven’s consecutive usability which ended up at 7/10. Also under the identical toasting time, the four pieces of bread became brown with an increased evenness from the first batch. While the color was a bit darker than ideal, the extra crispiness made the second batch more suitable for soups.
Pizza




- Function: Bake
- Temperature: 450°F
- Cooking Time: 5m 15s
- Convection: Yes
The Toshiba baked a 9-inch thick-crust meat pizza evenly throughout in terms of doneness and color earning it a 9.1/10.
Even though the Pizza preset of the oven is 450°F for 10 minutes, it only took 5m15s to cook. It was really fast compared to the recommended 10 minutes on the label. In comparison to other toaster ovens in our Pizza test, it scored a 9.3/10.
The crust wasn’t dry and turned out a beautiful golden brown with some nicely charred spots. It deserved a 9.5/10. The cheese was also nicely melted and caramelized so it got a 9/10. After tasting, our chef gave the pizza an 8.7/10.




- Function: Toast
- Temperature: 450°F
- Cooking Time: 9m
- Convection: No
For its low power draw, the Mueller did pretty well in our Pizza test with a score of 7.6/10.
The oven took 9 minutes to bake a 9-inch thick-crust meat pizza which was slightly faster than the label’s recommended 10 minutes. However, compared to our tested toaster ovens, it could only be a 6/10.
The crust had a golden color all the way through and the inside was still moist. If only the crust was a bit more crispy, it would’ve gotten higher than an 8/10.
The toppings were also caramelized quite evenly from the meat and veggies to the cheese, worthy of another 8/10. The cheese was nicely melted but the areas closer to the back of the cooking chamber were more caramelized compared to the rest.
With both the crust and the toppings being 8/10, our chef had no reason to give the pizza one final 8/10 for taste.
Whole Roasted Chicken





- Function: Rotisserie
- Temperature: 350°F
- Cooking Time: 1h
- Convection: No
Even though we chose a 3 lb chicken—in accordance with our Whole Roasted Chicken test—and despite the 4-pound claim on the label, it barely fit. In addition, there wasn’t enough space below to use the drip pan so cleaning up was a hassle.
Luckily, the fat from the chicken didn’t splatter too much inside the oven. Overall, the Toshiba scored a 7.8/10 for this test.
It took the oven 1 hour, the standard amount of time, to roast the chicken to golden brown so we gave it an 8/10.
The smooth rotation caramelized the chicken skin to a superb color while maintaining the juiciness of the meat. However, the skin wasn’t really crispy without convection so we only gave a 7/10.
The rotation also allowed the whole chicken to be thoroughly cooked in 1 hour with no pink spots. The internal temperature, however, was a bit too high at 207°F compared to the USDA recommended 165°F-180°F, so it got a 7.8/10.
Even though the chicken was cooked to slightly well-done, the meat was still moist and tender so our chef gave it an 8 for taste.






- Function: Toast
- Temperature: 350°F
- Cooking Time: 1h 20m
- Convection: No
The Mueller could barely fit a 3 lb chicken for our Whole Roasted Chicken test. Nonetheless, the result was quite decent at 7/10 in total. If you were to purchase this oven and use it to roast a whole chicken, we recommend cutting it open or chopping it into pieces beforehand.
We first placed the chicken backside down on the baking pan. When we slid the pan in, the top of the chicken breast grazed the upper heating element’s guard and was seared.
After the first 40 minutes, we flipped the chicken to find out that parts of the skin on the back got stuck to the baking pan. Then, when we reinsert the pan, the same problem with the breast happened to the back. Luckily, they weren’t burnt.
However, even after 1 hour and 20 minutes, most of the chicken skin still hasn’t reached a desirable color. The chicken, for the most part, looked like it was steamed and not roasted, so we gave the skin a 5.5/10.
Nonetheless, our chef decided to stop the roasting as the color wouldn’t improve anyway and to avoid overcooking the meat. This cooking time was the equivalent of a 6/10 according to our data.
With such a long cooking time, the meat had no pink spots. However, the chicken’s internal temperature was 185°F-192°F, higher than the USDA recommended 165°F-180°F. Thus, we gave it an 8.7/ for doneness.
While not the most appetizing looking, the meat was very juicy. That, combined with the slight caramelization on the skin, was enough for a 7.5/10 for taste from our chef.
Baked French Fries




- Function: Bake
- Temperature: 400°F
- Cooking Time: 20m
- Convection: Yes
The Toshiba did an acceptable job of baking 12 oz of french fries earning a 6.1/10.
Compared to other ovens in our Baked French Fries test, we had to cook the fries for 20 minutes so we could only give it a 5/10. Being baked on a tray and not in an air fryer basket, the fries lacked color resulting in a 6/10.
The fries only crisped up a little on the outside and were considerably moist inside so it’s another 6/10. Our chef gave the resulting fries a 6.7/10 for taste.




- Function: Toast
- Temperature: 400°F
- Cooking Time: 27 m
- Convection: No
Our Baked French Fries test brought out the Mueller’s weakness of not being able to maintain a high temperature due to its low power draw. Its even heat distribution couldn’t help much if the temperature wasn’t high enough, so the final score was 3.6/10.
We stopped the baking after 27 minutes as the fries weren’t getting any more colors. This, nonetheless, was over our time limit of 25 minutes, so it was a 0/10.
The fries had no significant color change and barely enough for a 4.5/10. We ended up with 12 oz of frozen fries that were more similar to being dried in an oven than being baked, so we gave them another 4.5/10 for texture.
Fortunately, the fries were cooked through and not soggy, so our chef could give them a 4.5/10 for taste and not a zero.
Toshiba AC25CEW-BS Toaster Oven Design Review
- Exterior (20%)8.0/10
- Interior (30%)6.5/10
- Build Quality (50%)8.0/10
- Exterior (20%)5.0/10
- Interior (30%)1.0/10
- Build Quality (50%)8.0/10
In the Box

- Model: L series - AC25CEW-BS
- Warranty: 1 year (US only)
- User Manual
- Baking Rack
- Baking Pan
- Rack Clamp
- Removable Crumb Tray
- Rotisserie Kit and Lifter
The packaging keeps all the 5 accessories firmly in place while being easy to unbox and convenient to repack. Besides showing some basic information, it also gives instructions on how to unbox properly.

- Model: MT-175
- Warranty: 1 year
- User Manual
- Baking Rack
- Baking Pan
The Mueller toaster oven came in a basic packaging and positioned with two foam pads. The included accessories were simply duct-taped to the oven. Inside the box are also a user manual and a simple recipe booklet.
Exterior






- Weight:16.2 oz (460 g)
- Length:19.0" (48.2 cm)
- Width:15.6" (39.6 cm)
- Height:10.8" (27.4 cm)
- Material:Stainless steel
- Color:Black
- Door Handle:cool-touch
- Tray Indicators:Yes
- Crumb Tray:Removable
One of the strongest points of the Toshiba AC25CEW-BS Toaster Oven is plenty of air ventilation — on two sides, the back, the bottom, and the top. It also has strong bottom stands and two buffers on the back to prevent the oven from being too close to the wall.
This was one of the few ovens where our measurements and the manufacturer’s completely coincided at 18.98" x 15.59" x 10.78". We do need to point out that we could see the internal circuits through the ventilation holes although we’re not sure if it affects the oven.







- Weight:9.0 lbs (4.1 kg)
- Length:15.0" (38.0 cm)
- Width:11.6" (29.5 cm)
- Height:8.9" (22.5 cm)
- Material:Stainless steel
- Color:Gray
- Door Handle:Cool-touch
- Tray Indicators:No
- Crumb Tray:Detachable
As simple as it is, the Mueller has all the standard exterior features of a small toaster oven but also something more. The bottom of the oven acts as a detachable crumb tray which not only makes it easy to remove the falling bits and crumbs but also to clean the entire interior.
The oven has a cool-touch door handle and back buffers to prevent it from being too close to the wall. Unfortunately, it has no cord storage or carrying handles.
Our measurements of the oven’s footprint were 14.96" x 11.61" x 8.86" which pretty much coincided with the manufacturer’s 14.84" x 11.85" x 8.86". However, the weight of the oven by itself was already 9 lbs whereas the label said the entire box was 7.63 lbs.
Control Panel

- Type:LCD display + 3 control knobs + Stop/Start button
- Temperature:150°F - 450°F timer
- Timer:1 minute - 2 hours
- Indicator Light:No
- Status Bar:No
- Light Toggle:No
- Convection Toggle:No
- Rotation Toggle:No
- Automatic Preheat:No
- Audio Cues:No
The control panel consists of an LCD digital display, 3 control knobs for functions, temperature, time, and the stop/start button. The glossy plastic knobs turn smoothly and seem durable.

- Type:3 control knobs
- Temperature:150°F - 450°F
- Timer:1 minute - 30 minutes + stay-on
- Indicator Light:Yes
- Status Bar:No
- Light Toggle:No
- Convection Toggle:No
- Rotation Toggle:No
- Automatic Preheat:No
- Audio Cues:No
The Mueller has a basic analog control panel with three dials for temperature, function, and time. The time dial has a stay-on setting to help with its short range, similar to many other small toaster ovens. Interestingly, while the max temperature setting was 450°F, we actually recorded the internal temperature of the oven reaching 500°F on the said setting.
Cooking Functions of the Toshiba Digital Toaster Oven
- Toast (level 1-6, without convection)
- Bake (150°F - 450°F, without convection)
- Broil (150°F - 350°F, without convection)
- Pizza (150°F - 450°F, with convection)
- Cookies (150°F - 450°F, with convection)
- Defrost (100°F - 180°F, without convection)
- Reheat (150°F - 450°F, with convection)
- Rotisserie (150°F - 350°F, without convection)
- Keep warm (100°F - 180°F, without convection)
- Convection (150°F - 450°F)
One may argue that 10 cooking functions are too many but they are helpful for beginners in the kitchen. The Rotisserie and the Keep Warm functions are the two that stand out from the rest.

- Toast
- Bake
- Broil
- Keep warm
Different from most other toaster ovens, the Mueller’s Bake function only uses the lower heating elements as opposed to lower and upper. The Broil function still uses only the upper heating elements.
The Toast function is where both the lower and upper heating elements work. Nonetheless, the oven still provides all the basic functions for its intended purposes.
Interior



- Heating Elements:4 nichrome
- Convection Fan:Yes
- Lighting:No
- Tray Levels:3
- Rotisserie:Yes
- Safety Hook:No
The Toshiba has 4 nichrome heating elements and 3 tray levels which are standard for its size. This oven has a convection system which is always a plus but it doesn’t have an interior light like many other units of the same size, e.g, the Breville BOV845BSSUSC. It received an extra point thanks to its rotisserie socket and bracket.



- Heating Elements:2 quartz
- Convection Fan:No
- Lighting:No
- Tray Levels:2
- Rotisserie:No
- Safety Hook:No
Similar to many other small toaster ovens, including the Comfee CFO-BB101, the Mueller lacks a convection fan and an interior light. In addition, it only has two heating elements which can usually lead to uneven heat distribution compared to four or more heating elements.
These heating elements are made of quartz which uses infrared light to cook foods faster than the more common nichrome counterparts. Quartz heating elements also cool down faster, are more energy-efficient and easier to clean but not as durable.
However, if grease splashes onto the heating elements while cooking, it’ll leave permanent stains. This is why they usually have guards which this oven also has.
Capacity

- Length:12.6" (32.0 cm)
- Width:12.2" (31.0 cm)
- Height:9.3" (23.5 cm)
True to the description, it can fit a 12-inch pizza. However, it can’t fit 6 slices of toast or a 4-pound chicken but is big enough for 4 slices of toast or a 3-pound chicken.
We measured the cooking chamber’s volume to be 23.3 liters which was a bit different from the manufacturer’s provided capacity of 25 liters. However, it could just be a difference in measuring standards.

- Length:10.6" (27.0 cm)
- Width:9.8" (25.0 cm)
- Height:7.5" (19.0 cm)
We could fit four slices of toast, a 9-inch pizza but we could barely fit a 3 lb chicken inside the Mueller, unlike the same-sized Breville BOV450XL. We measured the cooking chamber volume to be around 12.81 liters, slightly different than the manufacturer’s provided capacity of 11.67 liters. However, it could just be a difference in measuring standards.
Power Cord of the Toshiba AC25CEW-BS Digital Toaster Oven

- Length:15.7" (39.9 cm)
- Type:3-prong plug
- Power:1500
- Rated Output:120
The length of the power cord is roughly 15.7"—ideal for household use. It’s also long enough to wrap firmly around the two back buffers.

- Length:30.7" (78.0 cm)
- Type:2-prong plug
- Power:1100 W
- Rated Output:120 V ~ 60 Hz
The power cord is 30.7 inches long, suitable for household use. Unfortunately, the oven doesn’t have any storage space for it.
Accessories

- Length:12.6" (32.0 cm)
- Width:11.3" (28.7 cm)
- Height:NaN" (NaN cm)
- Material:Stainless steel
- Dishwasher Safe:Yes
The shape of the baking rack makes it easier to remove either with gloves or clamps.

- Length:10.5" (26.7 cm)
- Width:8.8" (22.4 cm)
- Height:0.5" (1.3 cm)
- Material:Stainless steel
- Dishwasher Safe:Yes
The two sides of the baking rack have slight curves upward at an angle to keep the baking pan in place. It fits perfectly with the guide to help prevent accidents when placing your food in the oven.
Accessories

- Length:11.7" (29.8 cm)
- Width:9.4" (23.9 cm)
- Height:0.9" (2.4 cm)
- Material:Stainless steel
- Dishwasher Safe:Yes
The baking pan has ridges and grooves which can give your food attractive roasting marks and catch the dripping better. However, it’s a little smaller than the oven capacity and has a coating but isn’t completely non-stick.

- Length:10.2" (25.8 cm)
- Width:7.9" (20.0 cm)
- Height:0.6" (1.5 cm)
- Material:Stainless steel
- Dishwasher Safe:Yes
The baking pan doesn’t fit into the guide rails and has to on top of the rack. This may prevent the full use of the oven’s capacity and lead to some inconveniences during cooking.
On the bright side, the pan has ridges and grooves to give your food attractive roasting marks and catch the dripping better. It has a coating but is not completely non-stick so you may need to watch out for some stubborn stains after a hefty roast.
Accessories

- Length:7.5" (19.2 cm)
- Width:2.2" (5.5 cm)
- Height:NaN" (NaN cm)
- Material:Stainless steel
- Dishwasher Safe:Yes
The rack clamp fits the baking pan and rack nicely but doesn’t have a good handle. Nonetheless, not all ovens come with a clamp like this so it’s a plus.
Accessories



- Length:12.6" (32.0 cm)
- Width:11.0" (27.9 cm)
- Height:1.2" (3.1 cm)
- Material:Stainless steel
- Dishwasher Safe:Not advisable
The crumb tray is a useful accessory — crumbs being quite a hassle to clean up. However, some still fell to the bottom of the oven as we removed the tray. Also, upon cleaning the crumb tray after the roasted chicken test, we found it showed signs of oxidation from catching the drippings.
Accessories



- Length:12.6" (32.0 cm)
- Width:9.8" (25.0 cm)
- Height:NaN" (NaN cm)
- Material:Stainless steel
- Dishwasher Safe:Yes
The rotisserie kit does a fantastic job of securing the chicken thanks to the angle-adjustable 2-pronged forks. The structure of the forks, however, isn’t particularly strong leading to possible slight bending. Also, in the aftermath of the roasted chicken test, a screw of the rotisserie kit had rusted slightly.
Build Quality

The Toshiba AC25CEW-BS is quite robust while still relatively light and small. It also has more air ventilation holes than a number of other toaster ovens including the Instant Omni Plus 18L and Cuisinart.

For a simple small toaster oven, build quality is all about how durable it is and if it works properly. The Mueller accomplishes that with a sturdy stainless steel casing and smooth-turning dials.
Toshiba Digital Convection Toaster Oven Usability
- User Control (30%)9.0/10
- Ease of Use (50%)5.0/10
- Cleanability (20%)8.0/10
- User Control (30%)6.0/10
- Ease of Use (50%)4.0/10
- Cleanability (20%)7.0/10
User Control
The Toshiba has 10 functions to choose from. However, the convection fan isn’t applicable to all of them. Nonetheless, you can always choose Convection, then set the desired temperature and time. The temperature can be adjusted in 10°F increments.
The large and detailed timer from one minute to two hours is a strong point of this oven. It’s also specified by the minute.
Even though the Mueller only has three simple control dials, there are a few things to keep in mind. For the timer knob, when setting it to less than 10 minutes, always rotate past 10 minutes and then rotate back to the desired time.
It’s always tricky to precisely adjust time and temperature for an analog-control toaster oven and this one is no different. Nonetheless, you can use an external timer and an oven thermometer to get more accurate readings.
If you frequently use the stay-on feature, you can turn off the oven by rotating the function dial to Off instead of the timer.
Ease of Use



The oven door has a heat-resistant handle and tray-level indicators on the glass. The casing has good heat insulation and only gets too hot to the touch at 450°F.
The Toshiba doesn’t have an automatic preheat phase like many other digital models, e.g., the Instant Omni Plus 18L. The digital display automatically turns off after a period of no interaction. After the oven finishes cooking, you will hear a very clear beep similar to when you’ve just plugged in.
There’s no audio cue when you’re adjusting the knobs. Furthermore, if you need to readjust the setting during cooking, you have to press stop and repeat all the inputs. The only thing you can adjust during cooking is the timer.
It’s hard to keep the door partially open and there’s no internal lighting. Also, this oven doesn’t turn off upon opening the door, unlike some others.
Although the accessories fit well, removing the rotisserie kit from the oven can be a little tricky even with the lifter. With a little practice, however, it’ll become much easier.
What’s convenient about 100% analog toaster ovens is that it’s very simple to adjust time and temperature during cooking. When the timer runs out, a bell will sound and the oven will shut off. Afterward, you can freely leave it plugged in and not worry about power consumption as it has no digital display.
The door can open at any angle < 50° to let food cool down inside the oven. However, keep in mind that opening the door doesn’t stop the oven. The exterior shell isn’t very thick, so it gets hot to the touch quite quickly during cooking.
Cleanability




We cleaned the Toshiba following our toaster oven cleaning guide. Thanks to its internal and external coating and lack of difficult nooks and crannies, cleaning was pretty straightforward. In addition, enough space has been left between the heating elements and internal walls to facilitate cleaning.
Roasting a whole chicken with the rotisserie kit left some difficult stains on the ceiling but a paste of baking soda and water did the trick. One minor inconvenience was that some crumbs still fell onto the internal floor and we had to pick them up anyway.




We clean the stainless steel exterior with no problem. However, after the chicken test, there were burnt bits stuck to the upper heating element’s guard and grease on the cooking chamber’s ceiling. There was ample space between the ceiling and the upper heating element, so we proceed to try every cleaning method possible.
Unfortunately, we could only scrub off the bits. Due to the interior not having a non-stick coating, there were some permanent stains on the cooking chamber’s ceiling and the upper heating element’s guard.
Luckily, the heating element itself was intact. Also, we were able to remove the stubborn stains on the baking pan by brushing them with a paste of baking soda and water.