The Cosori 12-in-1 Air Fryer Toaster Oven delivers versatile cooking performance with its 12 functions including air frying, toasting, baking, and broiling. Reviewers praised its spacious interior that accommodates large items like a 13-inch pizza or 5 lb chicken, and noted the inclusion of multiple accessories. The unit features a convection fan and four heating elements for even cooking. However, users reported an initial odor that can be mitigated with a cleaning method involving lemon slices and water. Some reviewers noted the upward heat vent requires careful placement for proper ventilation.

Full review
12-in-1 functionality in practice
The Cosori 12-in-1 Air Fryer Toaster Oven delivers on its promise of multiple cooking modes, with users reporting success across air frying, baking, broiling, toasting, and rotisserie functions. One reviewer noted that the air frying mode produces results comparable to dedicated basket air fryers, particularly with chicken tenders and vegetables. The appliance includes 12 preset functions including dehydrating, fermenting, pizza baking, and bagel toasting. Users have found the rotisserie function especially useful for cooking whole chickens, accommodating up to five pounds. The device also offers a dedicated s function, though some users prefer the manual bake setting for more control over texture and doneness. The variety of functions allows for versatile meal preparation, making it a suitable appliance for families or individuals who want to minimize kitchen appliances while maximizing cooking options.
Size and capacity considerations
The appliance measures 20.1 x 16.5 x 12.1 inches and offers a 30-liter capacity, sufficient for cooking meals for 5-7 people. This makes it ideal for larger households or those who entertain frequently. The large capacity accommodates 6 slices of bread, a 13-inch pizza, or a 5-pound chicken. However, the size also presents challenges in smaller kitchens, as the appliance is quite large and requires adequate countertop space. Users have noted that the appliance is significantly bigger than standard toaster ovens, and its dimensions mean it may not fit in kitchens with limited counter space. The large size also affects portability, making it more of a permanent kitchen fixture than a moveable appliance. For those with ample kitchen space, the size is a benefit, but for those with cramped kitchens, it may be a drawback.
Ventilation and placement requirements
The appliance vents heat upward rather than out the back, which requires careful placement to avoid heat buildup. Users have reported that the heat vent in the back forces air upward, meaning the appliance must be placed where it has room to breathe all around it, particularly above. This design feature can be a challenge for users who want to place the appliance in tight spaces or near cabinets. One reviewer noted that they had to reposition the appliance to ensure adequate ventilation, which was a minor inconvenience. The upward venting also means that the appliance may not be suitable for placement in enclosed spaces or near heat-sensitive items. Users who have placed the appliance in a kitchen with limited clearance above have found that proper positioning is necessary to prevent overheating and ensure optimal performance.
Initial odor and seasoning period
New users often report an initial odor when first using the appliance, which is a common issue with new countertop appliances. The appliance emits a smell that some users describe as unpleasant, particularly during the first few uses. To address this, one reviewer recommended running the air fry mode at 400°F for 8 minutes with a bowl of water and lemon or lime slices inside. This method effectively neutralized the smell and made the appliance more pleasant to use. The odor issue is temporary and typically resolves after the initial seasoning period. Users who experienced the smell initially found that the process of running the appliance with citrus and water helped to eliminate the smell within a few uses. This is a minor inconvenience that most users find manageable and is outweighed by the appliance's functionality.
Performance in air frying
The air frying performance of the Cosori 12-in-1 Air Fryer Toaster Oven is one of its strongest features, with users reporting that it delivers crispy results comparable to dedicated air fryers. The larger cooking surface area allows for more food to be cooked at once, which is particularly beneficial for families or those entertaining. Users have successfully prepared chicken tenders, zucchini fries, Brussels sprouts, and tater tots with consistent results. The appliance's ability to air fry without the need for excessive oil has been praised, as it produces crispy, healthy versions of fried foods. One reviewer noted that they were able to achieve the same level of crispiness as their previous basket air fryer, which was a significant improvement over earlier models they had used. The air frying mode is particularly effective for making s'mores, which have become a favorite among users.
Baking and broiling capabilities
The baking function of the appliance is versatile and well-suited for a variety of dishes. Users have reported success with baking cookies, s, and even roasting whole chickens. The bake function allows for more control than preset options, which some users prefer for achieving desired textures. The broil function is also effective for quickly melting cheese or browning the tops of dishes. One reviewer noted that the broil function works well for reheating pizza and cooking small salmon fillets in minutes. The ability to use the food tray positioned all the way up makes broiling convenient and efficient. The appliance's baking performance is particularly notable for its ability to produce evenly cooked dishes with crispy edges and chewy middles. Users have found that the bake function is more reliable than preset options for achieving consistent results across different recipes.
Toasting and rotisserie functions
The toaster oven function is particularly useful for families, as it can accommodate up to six slices of bread or waffles simultaneously. While it takes slightly longer than a traditional toaster, it allows multiple family members to enjoy hot toast or waffles at the same time. The rotisserie function has been praised for its ability to cook whole chickens, accommodating up to five pounds. Users have noted that the rotisserie function works well for cooking chicken breasts, loins, and other cuts of meat. The appliance also includes a dedicated s function, which is useful for making quick and easy s. The rotisserie feature is especially appreciated by users who frequently cook whole chickens or roast large cuts of meat. The ability to attach a whole chicken to the rotisserie makes it a valuable addition to the appliance's feature set.
Cleaning and maintenance challenges
Cleaning the appliance presents some challenges, particularly with the crumb tray at the bottom. Users have noted that oil and food drippings can be difficult to remove from the tray, requiring extra effort or the use of foil to protect it. The glass door is relatively easy to clean, though some users have reported issues with cleaning the front glass after prolonged use. The interior surfaces are generally easy to wipe down, but the crumb tray requires more attention. Users have recommended covering the crumb tray with foil to prevent buildup and make cleaning easier. The racks and trays are generally durable, though some users have noted that they may show wear over time. The overall cleaning process is straightforward, but the crumb tray requires extra care to maintain cleanliness.
Overall user satisfaction and value
Users who have tested the appliance over extended periods report high satisfaction with its performance and versatility. The appliance's ability to combine multiple functions into one unit is seen as a major advantage, particularly for those with limited kitchen space. The larger capacity compared to standard air fryers allows for more food to be cooked at once, which is beneficial for families or those who entertain. The appliance is particularly appreciated for its air frying capabilities, which produce results comparable to dedicated basket air fryers. Users have noted that the appliance is a worthwhile investment for those who want a versatile countertop appliance that can handle multiple cooking tasks. The combination of features, performance, and durability has led many users to recommend it to others looking for a multifunctional kitchen appliance.
Strengths
- +12 cooking functions including air frying, toasting, baking, and broiling
- +Spacious interior fits a 13-inch pizza or 5 lb chicken
- +Includes multiple accessories like baking rack, air fry basket, and rotisserie kit
- +Convection fan and four heating elements for even cooking
Watch-outs
- −Initial odor when first using the unit
- −Heat vent directs air upward, requiring adequate ventilation space
How it compares
The Cosori 12-in-1 Air Fryer Toaster Oven outperforms the Breville Air-Fryer Toaster Oven in terms of capacity and includes a convection fan for even cooking, while the Breville model lacks a convection feature. Compared to the Ninja Foodi XL Pro, it has less capacity but more cooking functions and better evenness. It's more versatile than the Cuisinart TOA-70 but less precise in temperature control.
Rating sources
“I can confirm that all of these features STILL work very well.”
“In my opinion, the capacity to footprint balance is the headline. It's big, yes, but that space means I can cook full meals without juggling a main oven.”
“In my opinion, the design sits right between utilitarian and modern with enough polish to live on the counter and enough capacity to feel like a small oven rather than a toy.”
Our 4.6 score is the average of these published ratings. Ratings marked * were derived from the reviewer’s written analysis or video transcript — the publisher didn’t print an explicit numeric score, so we inferred one from their own words. Click through to verify. More about methodology.