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Black+Decker Convection (CTO6335S) vs Mueller 4 Slice Toaster Oven Side-by-Side Comparison

Black+Decker Convection vs Mueller 4 Slice Toaster Oven. A side-by-side comparison between our best budget toaster oven and our best-value small pick.

By , , and Updated

Black+Decker Convection

Mueller 4 Slice

Black+Decker Convection (CTO6335S) vs Mueller 4 Slice Toaster Oven

Overall Verdict

6.7
Overall Score
6.1
Overall Score
  • Performance (50%)7.0
  • Design (25%)6.6
  • Usability (25%)6.1
  • Performance (50%)7.0
  • Design (25%)5.3
  • Usability (25%)5.2

The Black+Decker Convection Toaster Oven (CTO6335S) and the Mueller 4 Slice Toaster Oven (MT-175) have some interesting strengths and weaknesses of their own. As our best budget toaster oven and our best-value small pick, their overall scores don’t differ too much from one another.

Design-wise, the Mueller is simply an analog toaster oven with 3 control knobs. Meanwhile, the Black+Decker has an LCD and 13 control buttons for more precise adjustments of timer and temperature.

The Mueller has a neat detachable crumb tray which makes it easy to clean, especially for a small toaster oven. On the other hand, the Black+Decker has a large cooking chamber to minimize grease splashing to the walls. Both ovens don’t have an interior light though.

The most interesting aspect between these two toaster ovens is that their performance scores are equal. Upon a closer look, the Black+Decker has the added benefits of having a convection system and more heating elements, resulting in higher scores in roasting whole chicken and baking fries. In contrast, the Mueller has just the right balance of capacity and power to score higher in toasting bread and baking pizza, both of which don’t require convection.

Pros & Cons

  • Large capacity
  • Highly affordable
  • Easy-to-clean stainless steel exterior
  • High-contrast digital display
  • Sturdy exterior
  • Cool-touch door handle
  • Convenient slide-out crumb tray
  • 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
  • Convection fan isn’t all-applicable
  • No internal lighting
  • Buttons not reliably responsive
  • No convection fan
  • No internal lighting
  • No safety mechanism for the door

Key Specs

Dimensions
L19.29 x W13.38 x H10.62 inches
L14.96 x W11.61 x H8.86 inches
Weight
12.9 lbs (5.8 kg)
9.0 lbs (4.1 kg)
Control Type
LCD display + 13 buttons
3 control knobs
Temperature
200°F - 450°F
150°F - 450°F
Timer
1 minute - 2 hours
1 minute - 30 minutes + stay-on
Cooking Functions
8
4

Where to Buy?

Price at publication
$86.01
$64.55

*You help support HealthyKitchen101's product testing and reviews by purchasing from our retail partners.

Analysis and Test Results

Performance

Overall Performance Scoring
7.0
7.0

Toast

7.0
7.5
From left to right, 24 pieces of toast for the top and bottom of three toast levels including lighter, medium, and darker.
On the left: Level 3; In the middle: Level 4; On the right: Level 5
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 Black+Decker CTO6335S Convection 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.
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.
Function
Toast
Toast
Number of Slices
4
4
Toast Level
4/7
⅓ to Dark
Cooking Time
5m 10s
4m
Second Batch
3m
4m
Convection
No
No

Pizza

6.8
7.6
A toaster oven baked 9-inch thick-crust meat pizza with cheese, onions, and green bell peppers on top inside a baking pan.
A 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 melty cheese, meat, and green bell peppers on top baked using a toaster oven.
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.
Function
Bake
Toast
Temperature
450°F
450°F
Cooking Time
7m 30s
9m
Convection
Yes
No

Roasted Whole Chicken

7.7
7.0
A whole roasted chicken using a toaster oven on a silver broiling rack and baking pan on a white background.
A whole roasted chicken using a toaster oven on a silver broiling rack 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 189°F and 192°F.
Seven pieces of a carved chicken including a carcass, two breasts, two wings, and two thighs on a silver 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.
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.
Function
Bake
Toast
Temperature
350°F
350°F
Cooking Time
1h
1h 20m
Convection
Yes
No

Baked French Fries

5.6
3.6
Pieces of baked french fries using a toaster oven on a silver baking pan on a white background.
Pieces of baked french fries using a toaster oven on a silver baking pan on a white background.
A close-up of pieces of baked french fries using a toaster oven on a silver baking pan.
Six pieces of broken-up baked french fries are stacked on top of pieces of whole fries on a silver baking pan.
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.
Function
Bake
Toast
Temperature
400°F.
400°F
Cooking Time
25m 50s
27 m
Convection
Yes
No

Design

Overall Design Scoring
6.6
5.3

In The Box

An oven rack, a user manual, the BLACK+DECKER CTO6335S Convection Toaster Oven, a box, a baking pan, and a broiling rack.
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.

Exterior

5.0
5.0
A closed front of the Black+Decker CTO6335S Convection Toaster Oven with exterior measurements on a white background.
A closed front of the Black+Decker CTO6335S Convection Toaster Oven with exterior measurements on a white background.
The front of a closed Black+Decker CTO6335S Convection Toaster Oven has a control panel and the right has ventilation holes.
The back and left sides of the Black+Decker CTO6335S Toaster Oven. The back has air ventilation holes and two black buffers.
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.
Weight
12.9 lbs (5.8 kg)
9.0 lbs (4.1 kg)
Length
19.3" (49.0 cm)
15.0" (38.0 cm)
Width
13.4" (34.0 cm)
11.6" (29.5 cm)
Height
10.6" (27.0 cm)
8.9" (22.5 cm)
Material
Stainless steel
Stainless steel
Color
Silver
Gray
Door Handle
cool-touch
Cool-touch
Tray Indicators
No
No
Crumb Tray
Slide-out
Detachable

Control Panel

The BLACK+DECKER CTO6335S Toaster Oven’s control panel has an LCD and 13 buttons for 8 cooking functions and 5 features.
The control panel of the Black+Decker TO1760SS 4-Slice Toaster Oven has 3 control knobs for temperature, function, and timer.
Type
LCD display + 13 buttons
3 control knobs
Temperature
200°F - 450°F
150°F - 450°F
Timer
1 minute - 2 hours
1 minute - 30 minutes + stay-on
Indicator Light
Yes
Yes
Status Bar
No
No
Light Toggle
No
No
Convection Toggle
Yes
No
Rotation Toggle
No
No
Automatic Preheat
Yes
No
Audio Cues
No
No

Cooking Functions

The BLACK+DECKER CTO6335S’s cooking functions include Cookies, Pizza, Frozen snacks, Potato, Bake, Broil, Toast, and Bagel.
The function dial of the Black+Decker TO1760SS 4-Slice Toaster Oven has 3 cooking functions including Bake, Broil, and Toast.

Interior

7.0
1.0
The BLACK+DECKER CTO6335S’s cooking chamber has 4 quartz heating elements with guards, 2 levels, and a convection fan cavity.
The BLACK+DECKER CTO6335S’s cooking chamber has 4 quartz heating elements with guards, 2 levels, and a convection fan cavity.
The stainless steel BLACK+DECKER CTO6335S Convection Toaster Oven’s cooking chamber has a convection fan cavity on the right.
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.
Heating Elements
4 quartz
2 quartz
Convection Fan
Yes
No
Lighting
No
No
Tray Levels
2
2
Rotisserie
No
No
Safety Hook
No
No

Power Cord

A three-pronged plug power cord. In the background is the stainless steel BLACK+DECKER CTO6335S Convection Toaster Oven.
A two-pronged plug power cord. In the background is the stainless steel Mueller MT-175 4-Slice Countertop Toaster Oven.
Length
24.8" (63.0 cm)
30.7" (78.0 cm)
Type
3-prong plug
2-prong plug
Power
1500 W
1100 W
Rated Output
120 V ~ 60 Hz
120 V ~ 60 Hz

Accessories

A stainless steel baking rack of the stainless steel BLACK+DECKER CTO6335S Convection Toaster Oven on a grey background.
A stainless steel baking rack of the Mueller MT-175 4-Slice Countertop Toaster Oven on a white background.
Length
14.2" (36.0 cm)
10.5" (26.7 cm)
Width
10.0" (25.4 cm)
8.8" (22.4 cm)
Height
0.9" (2.2 cm)
0.5" (1.3 cm)
Material
Stainless steel
Stainless steel
Dishwasher Safe
Yes
Yes

Build Quality

7.0
8.0
The front of an opened BLACK+DECKER CTO6335S Convection Toaster Oven with a baking rack, a baking pan, and a broiling rack
The front of an opened stainless steel Mueller MT-175 4-Slice Countertop Toaster Oven with an oven rack and baking pan.

Capacity

An opened front of the BLACK+DECKER CTO6335S Convection Toaster Oven with interior measurements on a white background.
An opened front of the stainless steel Mueller MT-175 4-Slice Toaster Oven with interior measurements on a white background.
Length
14.2" (36.0 cm)
10.6" (27.0 cm)
Width
12.6" (32.0 cm)
9.8" (25.0 cm)
Height
7.9" (20.0 cm)
7.5" (19.0 cm)

Usability

Overall Usability Scoring
6.1
5.2

User Control

8.0
6.0

Easeof Use

5.0
4.0

Cleanability

6.0
7.0
Grease on the broiling rack of the stainless steel BLACK+DECKER CTO6335S Convection Toaster Oven.
Grease on the broiling rack of the stainless steel BLACK+DECKER CTO6335S Convection Toaster Oven.
Grease on the baking pan of the stainless steel BLACK+DECKER CTO6335S Convection Toaster Oven.
The cleaned broiling rack and baking pan of the stainless steel BLACK+DECKER CTO6335S Convection Toaster 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.
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.

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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 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.

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.

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