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Mueller 4 Slice vs Ninja Foodi XL Pro Toaster Oven Side-by-Side Comparison

Mueller 4 Slice vs Ninja Foodi XL Pro Toaster Oven. Our best-value small toaster oven put up a good fight but couldn’t measure up to our best large pick.

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Mueller 4 Slice

Ninja Foodi XL Pro

Mueller 4 Slice vs Ninja Foodi XL Pro Toaster Oven

Overall Verdict

The Mueller 4 Slice Toaster Oven (MT-175) put up quite a good fight versus the Ninja Foodi XL Pro Air Fryer Toaster Oven (DT201). We chose it as our best-value small pick for its performance in correlation to its cheap price, and not the number of design and usability features it has like with other toaster ovens. That being said, it still needs a lot more to measure up to our best large pick—the Foodie XL Pro.

The Mueller’s analog control dials are quite precise but not to the level of the Ninja. The Ninja’s control panel is one of the most excellent in our line-up, having an informative digital display, precise timer and temperature control, and handy toggle switches.

The Mueller’s detachable crumb tray is always a nice feature to have in a small unit that makes it easy to clean the inside. The large cooking chamber of the Ninja, however, allows you to simply reach in and comfortably clean.

Performance-wise, the Mueller has really good scores—the highest in all of our small toaster ovens—just not the best like the Ninja’s. Moreover, the result of its fries test showed some common weaknesses of small models—low power output and no convection system.

Surprisingly, the Mueller scored higher than the Ninja in baking pizza. However, the cooking time wasn’t as fast and the Ninja could have performed better on a fresh pizza.

Ranking by
OverallScore Performance50% Design25% Usability25% ScoreOverall 50%Performance 25%Design 25%UsabilityNinja Foodi XL ProMueller 4 Slice8.68.08.89.56.17.05.35.2
Showing: 2/2 Items

Pros & Cons

  • Lightweight and small size
  • Easy-to-clean stainless steel exterior
  • Cool-touch door handle
  • Simple control knobs
  • Stay-on feature
  • Quartz heating elements have safeguards
  • Energy-saving
  • Straightforward and informative control panel
  • Tailored cooking functions
  • Family-sized capacity
  • Tray-level suggestions
  • Sturdy construction
  • Well-designed accessories
  • Easy-to-clean stainless steel exterior
  • Cool-touch door handle
  • No convection fan
  • No internal lighting
  • No safety mechanism for the door
  • No safety mechanism for the door
  • Faulty interior light upon received

Key Specs

Dimensions
L14.96 x W11.61 x H8.86 inches
L16.93 x W20.28 x H13.34 inches
Weight
9.0 lbs (4.1 kg)
26.4 lbs (12.0 kg)
Control Type
3 control knobs
Digital display + 10 buttons
Temperature
150°F - 450°F
85°F - 450°F
Timer
1 minute - 30 minutes + stay-on
1 minute - 4 hours
Cooking Functions
4
10

Where to Buy

Price at publication
$64.55
$299.99

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Analysis and Test Results

Performance

Overall Performance Scoring
7.0
8.0

Toast

7.5
8.3
Mueller 4 Slice Toaster Oven Toast Test
From left to right, 24 pieces of toast for the top and bottom of three toast levels including lighter, medium, and darker.
The top and bottom of the best four pieces of toast from the stainless steel Mueller MT-175 4-Slice Countertop Toaster Oven.
On the left are the top and bottom of four pieces of toast from the first batch, and on the right are from the second batch.
Ninja Foodi XL Pro Air Toaster Oven Toast Test
Ninja Foodi XL Pro Air Toaster Oven Toast From left to right, 24 pieces of toast for the top and bottom of three toast levels including lighter, medium, and darker.
The top and bottom of the best four pieces of toast from the Ninja DT201 Foodi XL Pro Air Convection Air Fryer Toaster Oven.
On the left are the top and bottom of four pieces of toast from the first batch, and on the right are from the second batch.
Function
Toast
Toast
Number of Slices
4
4
Toast Level
⅓ to Dark
5/7
Cooking Time
4m
5m 15s
Second Batch
4m
4m
Convection
No
No

Pizza

7.6
6.5
Mueller 4 Slice Toaster Oven Pizza Test
 Mueller 4 Slice Toaster Oven PizzaA toaster oven baked 9-inch thick-crust meat pizza with cheese, onions, and green bell peppers on top inside a baking pan.
Two slices of oven baked 9-inch thick-crust meat pizza with cheese, onions, and green bell peppers on top of one another.
Two hands break apart a slice of pizza with cheese, meat, onions, and green bell peppers on top baked using a toaster oven.
Ninja Foodi XL Pro Air Toaster Oven Pizza Test
Ninja Foodi XL Pro Air Toaster Oven PizzaA toaster oven baked 9-inch thick-crust meat pizza with cheese, onions, and green bell peppers on top inside a baking pan.
Two slices of oven baked 9-inch thick-crust meat pizza with cheese, onions, and green bell peppers on top of one another.
Two hands break apart a slice of pizza with cheese, meat, onions, and green bell peppers on top baked using a toaster oven.
Function
Toast
Pizza
Temperature
450°F
450°F
Cooking Time
9m
5m
Convection
No
Low

Whole Roasted Chicken

7.0
9.0
Mueller 4 Slice Toaster Oven Whole Roasted Chicken Test
A whole roasted chicken using the Mueller MT-175 Toaster Oven backside up on a silver baking pan on a white background.
A whole roasted chicken using the Mueller MT-175 Toaster Oven belly up on a silver baking pan on a white background.
A tray of whole toaster oven roasted chicken. The thermometer has two probes inside the chicken and displays 185°F and 192°F.
Eight pieces of a carved chicken including two carcass halves, two breasts, two wings, and two thighs on a baking pan.
Two hands pulling apart a roasted chicken thigh. In the white background is the rest of the roasted chicken on a baking pan.
Ninja Foodi XL Pro Air Toaster Oven Whole Roasted Chicken Test
A whole roasted chicken using the Ninja DT201 backside up inside an air fryer basket and baking pan on a white background.
A whole roasted chicken using the Ninja DT201 belly up inside an air fryer basket and baking pan on a white background.
A tray of whole toaster oven roasted chicken. The thermometer has two probes inside the chicken and displays 194°F and 199°F.
Eight pieces of a carved chicken including two carcass halves, two breasts, two wings, and two thighs on a baking pan.
A hand holding a pulled-apart roasted chicken thigh. In the background are an air fryer basket and baking pan.
Function
Toast
Air Roast
Temperature
350°F
350°F
Cooking Time
1h 20m
40m
Convection
No
Maximum

Baked French Fries

3.6
7.8
Mueller 4 Slice Toaster Oven Baked French Fries Test
Mueller 4 Slice Toaster Oven Baked French FriesPieces of baked french fries using the Mueller MT-175 Toaster Oven on a grooved silver baking pan on a white background.
A close-up of pieces of baked french fries using the Mueller MT-175 Toaster Oven on a baking pan on a white background.
Ten pieces of broken-up baked french fries are stacked on top of pieces of whole fries on a grooved silver baking pan.
Ninja Foodi XL Pro Air Toaster Oven Baked French Fries Test
Pieces of baked french fries using the Ninja DT201 Oven inside an air fryer basket and baking pan on a white background.
A close-up of pieces of baked french fries using the Ninja DT201 inside an air fryer basket and baking pan on a white background.
Four pieces of broken-up baked french fries are stacked on top of pieces of whole fries inside an air fryer basket.
Function
Toast
Air Fry
Temperature
400°F
400°F
Cooking Time
27 m
19m
Convection
No
Maximum

Design

Overall Design Scoring
5.3
8.8

In the Box

A box, the Mueller MT-175 4-Slice Toaster Oven, a recipe booklet, a baking pan, an oven rack, a user manual, and a brochure.
A box, the Ninja DT201, 2 baking pans, an air fryer basket, 2 oven racks, a broiling rack, user manual, and recipe booklet.

Exterior

5.0
7.0
A closed front of the stainless steel Mueller MT-175 4-Slice Toaster Oven with exterior measurements on a white background.
A closed front of the stainless steel Mueller MT-175 4-Slice Toaster Oven with exterior measurements on a white background.
Mueller 4 Slice Toaster Oven ExteriorThe front of a closed stainless steel Mueller MT-175 4-Slice Toaster Oven has a control panel and the right has holes.
The back and left sides of the Instant Omni Plus 18L have air ventilation holes. The back has a power cord and two buffers.
The top, front, and right sides of the Black+Decker TO1760SS 4-Slice Natural Convection Toaster Oven on a white background.
On a white background, the bottom of the Mueller MT-175 Toaster Oven has a detachable crumb tray, four stands, and holes.
The detached crumb tray of the stainless steel Black+Decker TO1760SS 4-Slice Countertop Toaster Oven on a white background.
A closed front of the Ninja DT201 Foodi XL Pro Air Convection Toaster Oven with exterior measurements on a white background.
A closed front of the Ninja DT201 Foodi XL Pro Air Convection Toaster Oven with exterior measurements on a white background.
The front of a closed Ninja DT201 Foodi XL Pro Air Toaster Oven has a control panel and the right has air ventilation holes.
The Ninja DT201 Foodi XL Pro Air Toaster Oven’s back and left sides have air ventilation holes. The back has two buffers.
The top, front, and left sides of the Ninja DT201 Foodi XL Pro Air Convection Air Fryer Toaster Oven on a white background.
On a white background, the bottom of the Ninja DT201 Foodi XL Pro Air Toaster Oven has air ventilation holes and four stands.
Weight
9.0 lbs (4.1 kg)
26.4 lbs (12.0 kg)
Length
15.0" (38.0 cm)
16.9" (43.0 cm)
Width
11.6" (29.5 cm)
20.3" (51.5 cm)
Height
8.9" (22.5 cm)
13.4" (34.0 cm)
Material
Stainless steel
Stainless steel
Color
Gray
Silver
Door Handle
Cool-touch
Cool-touch
Tray Indicators
No
No
Crumb Tray
Detachable
Removable

Control Panel

The control panel of the Black+Decker TO1760SS 4-Slice Toaster Oven has 3 control knobs for temperature, function, and timer.
The Ninja DT201 has a digital display and 10 buttons for power, 2-level, light, functions, time, temperature, and start/stop.
Type
3 control knobs
Digital display + 10 buttons
Temperature
150°F - 450°F
85°F - 450°F
Timer
1 minute - 30 minutes + stay-on
1 minute - 4 hours
Indicator Light
Yes
Yes
Status Bar
No
Yes
Light Toggle
No
Yes
Convection Toggle
No
Yes
Rotation Toggle
No
No
Automatic Preheat
No
Yes
Audio Cues
No
No

Cooking Functions

The function dial of the Black+Decker TO1760SS 4-Slice Toaster Oven has 3 cooking functions including Bake, Broil, and Toast.

Interior

1.0
9.5
Mueller 4 Slice Toaster Oven InteriorThe Mueller MT-175 4-Slice Toaster Oven’s cooking chamber has 2 quartz heating elements with guards and 2 guide rails.
Mueller 4 Slice Toaster Oven InteriorThe Mueller MT-175 4-Slice Toaster Oven’s cooking chamber has 2 quartz heating elements with guards and 2 guide rails.
The Mueller MT-175 Oven has 1 bottom heating element with a guard and 2 guide rails on its right cooking chamber wall.
Ninja Foodi XL Pro Air Toaster Oven’s cooking chamber has 6 heating elements, 4 guide rails, a fan cavity, and a light.
Ninja Foodi XL Pro Air Toaster Oven’s cooking chamber has 6 heating elements, 4 guide rails, a fan cavity, and a light.
The Ninja DT201 has 6 quartz heating elements, 4 guide rails, a fan cavity, and a light on the cooking chamber’s right wall.
The door hinge of an opened stainless steel Ninja DT201 Foodi XL Pro Air Convection Air Fryer Toaster Oven.
Heating Elements
2 quartz
5 quartz + 1 nichrome
Convection Fan
No
Yes
Lighting
No
Yes
Tray Levels
2
4
Rotisserie
No
No
Safety Hook
No
No

Power Cord

A two-pronged plug power cord. In the background is the stainless steel Mueller MT-175 4-Slice Countertop Toaster Oven.
A three-pronged plug power cord. In the background is the Ninja DT201 Foodi XL Pro Air Convection Air Fryer Toaster Oven.
Length
30.7" (78.0 cm)
3.2 ft (1.0 m)
Type
2-prong plug
3-prong plug
Power
1100 W
1800 W
Rated Output
120 V ~ 60 Hz
120 V ~ 60 Hz

Accessories

A stainless steel baking rack of the Mueller MT-175 4-Slice Countertop Toaster Oven on a white background.
A stainless steel baking rack of the Ninja DT201 Foodi XL Pro Air Convection Air Fryer Toaster Oven on a white background.
Length
10.5" (26.7 cm)
14.5" (36.8 cm)
Width
8.8" (22.4 cm)
11.5" (29.3 cm)
Height
0.5" (1.3 cm)
0.3" (0.7 cm)
Material
Stainless steel
Stainless steel
Dishwasher Safe
Yes
Yes

Build Quality

8.0
9.0
The front of an opened stainless steel Mueller MT-175 4-Slice Countertop Toaster Oven with an oven rack and baking pan.
The front of an opened Ninja DT201 with a removable crumb tray, broiling rack, air fryer basket, 2 oven racks, 2 baking pans.

Capacity

An opened front of the stainless steel Mueller MT-175 4-Slice Toaster Oven with interior measurements on a white background.
An opened front of the Ninja DT201 Foodi XL Pro Air Convection Toaster Oven with interior measurements on a white background.
Length
10.6" (27.0 cm)
14.5" (36.8 cm)
Width
9.8" (25.0 cm)
11.8" (30.0 cm)
Height
7.5" (19.0 cm)
11.0" (27.9 cm)

Usability

Overall Usability Scoring
5.2
9.5

User Control

6.0
9.9

Ease of Use

4.0
9.9

Cleanability

7.0
8.0
Mueller 4 Slice Toaster Oven CleanabilityPermanent stains on the left cooking chamber’s ceiling and the upper heating element’s guard of the Mueller MT-175 Oven.
Mueller 4 Slice Toaster Oven CleanabilityPermanent stains on the left cooking chamber’s ceiling and the upper heating element’s guard of the Mueller MT-175 Oven.
Permanent stains on the right cooking chamber’s ceiling and the upper heating element’s guard of the Mueller MT-175 Oven.
The cleaned grooved silver baking pan of the stainless steel Mueller MT-175 4-Slice Countertop Toaster Oven.
Ninja Foodi XL Pro Air Toaster Oven CleanabilityThe cleaned cooking chamber of the Ninja DT201 Foodi XL Pro Air Convection Air Fryer Toaster Oven.
Ninja Foodi XL Pro Air Toaster Oven CleanabilityThe cleaned cooking chamber of the Ninja DT201 Foodi XL Pro Air Convection Air Fryer Toaster Oven.
The cleaned bottom heating elements with guards of the Ninja DT201 Foodi XL Pro Air Convection Air Fryer Toaster Oven.
The cleaned enamel baking pan of the Ninja DT201 Foodi XL Pro Air Convection Air Fryer Toaster Oven.

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.

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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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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 Nguyen Ntk
Nguyen NtkVisual Specialist

Nguyen Ntk is a graphic designer, photographer, and videographer whose philosophy centers around respecting and celebrating the beauty of reality. Through his lenses, Nguyen strives to capture the true essence of objects and events, showcasing and highlighting authentic features without distortion or exaggeration.

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