Instant Omni Plus 18L Air Fryer Toaster Oven Review (2026)

Why you should trust this review

I bought this oven myself and cooked with it for three months before writing this. Instant had no part in it and did not provide it. A multi-function countertop oven only earns its space if it actually does several jobs well rather than doing all of them poorly, so I tested it by genuinely retiring other appliances and using it for real, everyday cooking, air-fried sides, baked dinners, toast in the morning, roasted vegetables, rather than running a single showcase recipe.

How we evaluated

Over three months I used most of the eleven functions in normal cooking: air frying fries and wings, baking, toasting bread for breakfast, broiling, roasting vegetables and chicken, and reheating leftovers. I tracked how evenly it cooked across the rack, how well the air-fry function crisped food, how fast it preheated, how intuitive the controls were, and how its substantial counter footprint and weight fit into a real kitchen. I cooked for a household, loading it to capacity to test the space claims.

Air frying and crisping

Air frying is the function most people buy this for, and it delivered. Fries came out crisp, wings rendered and browned, and roasted vegetables got real color rather than steaming sadly, all without the deep-fryer oil and mess. The 1500W element and convection got food genuinely crispy on the outside while cooking through, and the large basket meant I could do a full batch for the family in one go rather than cooking in shifts the way a small air fryer forces you to. For crisp results at real volume, this is where it shines.

Versatility across functions

The eleven functions are not just menu padding. Beyond air fry, I regularly used bake, toast, roast, broil, and reheat, and each did its job well: bread toasted evenly, baked dishes cooked through, roasts browned nicely, and reheating leftovers beat the microwave for texture. Having air fryer, toaster oven, and small convection oven duties combined in one machine genuinely let me clear other appliances off my counter. The extra modes like dehydrate, proof, and slow cook are situational but real bonuses if you use them.

Capacity and even cooking

At 18 liters the interior is large for a countertop oven, swallowing six slices of bread or a 12-inch pizza, which is enough to actually cook for a family rather than one or two people. Across three months cooking spread reasonably evenly across the rack, with only the minor hot-spot variation typical of any convection oven, easily managed by rotating a tray once. That real capacity is the difference between a gadget and an appliance you cook full meals in, and it is a big part of why it replaced more than one thing in my kitchen.

The honest trade-offs

Two real costs. First, it is big and heavy: at over 18 inches wide and more than 23 pounds, it claims serious counter real estate and is not something you will tuck away between uses, so you need to commit the space. Second, the eleven functions and the control panel take a little learning at first, with multiple modes and settings to get familiar with before it becomes second nature, though after a week or two it was intuitive. Neither stopped it from being genuinely useful, but you should budget the counter space and a short learning curve.

Who should buy the Instant Omni Plus?

Buy it if you want one appliance to air fry, bake, toast, and roast for a family, you have the counter space, and you would happily retire a separate air fryer and toaster oven. Buy it if real capacity and versatility are your priorities.

Skip it if your counter is tight and a smaller single-purpose air fryer would fit better, if you only ever need one cooking function, or if you want something you can stow away easily between uses.

The verdict

The Instant Omni Plus 18L earns its multi-function billing. Over three months it air fried food genuinely crisp, baked, toasted, and roasted well across eleven real functions, and its 18-liter interior cooked full family meals while letting me clear other appliances off the counter. It is large and heavy and the controls take a short while to learn, which are honest trade-offs. But for an all-in-one countertop oven that actually replaces several gadgets, it is my best multi-function pick.