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Breville BOV450XL Mini Smart vs Oster French Door Toaster Oven Side-by-Side Comparison

Breville BOV450XL Mini Smart vs Oster French Door Toaster Oven. With similar prices, the first one is small while the second is extra large.

Breville BOV450XL Mini Smart vs Oster French Door Toaster Oven


Price at publication
L15.74 x W14.17 x H8.86 inchesL21.53 x W19.96 x H12.79 inches
10.0 lbs (4.5 kg)16.8 lbs (7.6 kg)
Control Type
LCD display + 1 control dial + 8 buttonsLCD + 15 buttons
120°F - 450°F150°F - 450°F
1 minute - 2 hours1 minute - 6 hours
Cooking Functions
Interior Dimensions
L11.49 x W11 x H6.69 inchesL15.75 x W16.53 x H10.04 inches
13.86 liters42.83 liters
Heating Elements
4 quartz3 nichrome
Convection Fan


Build Quality
Overall Design Scoring

The Breville BOV450XL has a good capacity for a small oven. However, while it has a high wattage and quartz heating elements, it lacks a convection system, so the fancy heating elements don’t improve performance much.

Not being designed to accommodate a convection system was probably why it didn’t come with any useful additional accessories like an air fryer basket. And as a kicker, the interior has a non-stick coating but is black and contains no internal lights, unlike the Panasonic NB-G110P-K.

The Oster TSSTTVFDDG is one of the largest capacity ovens we have tested. However, it lacks premium features often seen in the same price range including having more than 3 rack levels or a non-stick interior,e.g., the Breville BOV845BSS. Features worth mentioning are good ventilation on all sides and the upper heating element.

Usability Comparison

User Control
Ease of Use
Overall Usability Scoring

The Breville BOV450XL is simple to use and to clean. Unfortunately, most of its unique features aren’t useful, including the toggles and cooking presets. Its smart heating algorithms as well as automatic preheat phase also didn’t add much to the test dishes we cooked. Cleaning it was an extremely easy task, though.

While the Oster TSSTTVFDDG is straightforward to use, it lacks premium features expected of similar-priced ovens including light and convection toggles as well as safety mechanisms.

Performance Test

Whole Roasted Chicken
Baked French Fries
Overall Performance Scoring

The Breville BOV450XL produced great toast and adequate results when roasting a whole chicken and baking french fries. However, it left a lot to be desired when we tried a pizza. We suspect this was due to the inconsistent heating of the oven.

Moreover, the fact that the oven didn’t have a convection system didn’t help in this regard. A model of the same brand that improved on this was the medium-sized Breville BOV845BSSUSC.

For roasting (which doesn’t require high heat) the Oster TSSTTVFDDG did well. However, it took time to reach higher temperatures. Additionally, it didn’t perform well with toast, pizza, and especially french fries that require higher temperatures for longer.

Overall Scores

Overall Scoring

Pros & Cons

  • Unique feature buttons
  • Non-stick interior
  • High-contrast digital display
  • Sturdy construction
  • Cool-touch door handle
  • Easy-to-clean stainless steel exterior
  • Convenient slide-out crumb tray
  • Large capacity
  • Interior lighting available
  • Easy-to-clean stainless steel exterior
  • Sturdy build
  • Air-ventilation holes on all sides
  • Cool-touch door handles
  • Convenient slide-out crumb tray
  • No interior lighting
  • No convection fan
  • Inconsistent heating elements
  • No convection toggle
  • Buttons not reliably responsive
  • Not very budget-friendly


The Breville BOV450XL Mini Smart and the Oster French Door Convection Toaster Oven (TSSTTVFDDG), interestingly, have similar overall scores. Here’s the catch though, the first one is small while the second is extra large and they also have similar prices.

The Breville’s higher power output allowed it to score higher in baking fries and especially toasting bread—our most crucial performance test—earning it the decisive edge to win against the Oster. On the other hand, the Oster’s nichrome heating elements and convection system allowed it to beat the Breville in baking pizza and roasting whole chicken.

The two toaster ovens have equal scores in terms of design. The Breville has a higher build quality shown in its thicker casing and well-designed control panel. Meanwhile, the Oster evened out the score with its convection system, interior light, and distinguished french door.

Both units were simple to use, but none were particularly convenient. The Breville has a non-stick interior coating for easy cleaning while the Oster’s large cooking chamber makes it easy to work around in general. The Oster’s flat buttons don’t respond as well and the information displayed on the LCD isn’t as detailed as the Breville’s.

Behind the Comparison

Headshot of Alan Nguyen
Alan NguyenReviewer

Alan Nguyen is a writer and product reviewer at HealthyKitchen101. His major in English language teaching taught him to present concise information. In addition to his cooking hobby, he values the practical aspects of household appliances.

Headshot of Tuyet Pham
Tuyet PhamProfessional Chef

Tuyet Pham is an award-winning Saigonese chef passionate about delicious and healthful foods. At HealthyKitchen101, she develops recipes and collaborates with our Research, Testing, and Review lab to evaluate the performance of cooking appliances. Her assessments add a strong authoritative voice to our product scoring process.

Headshot of Lap Vo
Lap VoTest Lead

Lap is Head of the Research, Testing, and Review Team (RTR Team) at HealthyKitchen101.com, where he directs and supervises the testing of kitchen gadgets and appliances.

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