Ninja 12-in-1 Smart Double Oven Review for Home Cooks

If you’re looking to upgrade your kitchen with something that saves time, adds versatility, and fits on your countertop, the Ninja 12-in-1 Smart Double Oven (DCT451) might be the appliance you didn’t know you needed. Found while browsing on Amazon, this smart oven is designed to handle everything from air frying to baking in two separate oven compartments simultaneously.

This review breaks down what it does, how it works, and why home cooks are raving about it.

So, What Is the Ninja DCT451 Smart Double Oven?

Okay, first off, yes. It’s a double oven, essentially two ovens stacked in one compact unit. The top and bottom compartments are separate, with their own temperature and cooking modes. That means you can be roasting a chicken below while toasting garlic bread on top, at the same time.

The Ninja DCT451 is a countertop appliance that features two independent ovens stacked vertically in one unit. It’s built with a FlexDoor design, which allows you to open just the top oven or both chambers simultaneously, depending on what you’re cooking.

Each oven operates independently, allowing you to cook two completely different dishes simultaneously. Whether it’s air-fried chicken and roasted veggies, or a crispy flatbread and reheated leftovers, this oven is made for multitasking.

The Ninja 12‑in‑1 Oven Is Smart …and not just in name

One of the best features is the Smart Cook System, which allows both ovens to cook two foods at different temperatures and have them finish simultaneously. This eliminates the need to juggle cooking times or reheat dishes after they’ve cooled. It includes a built-in thermometer you stick into your meat (or whatever you’re cooking). Set your doneness level, and the oven automatically stops cooking when it hits that internal temp. I made pork tenderloin last week without overthinking it, without cutting it open to check or crossing my fingers in hopes that it wasn’t raw inside.

The FlexDoor system enhances efficiency by providing complete control over which chamber to open, thereby preventing heat loss and streamlining your kitchen workflow. Practical, you can open just the top oven to pop in toast or warm leftovers, or open the whole door to use both chambers when you’re cooking a full meal. It’s more useful than I expected, especially on busy nights.

12 Cooking Functions for Everyday Use

This appliance lives up to its name with 12 built-in cooking functions, providing you with more ways to prepare meals without occupying additional space.

Top Oven (Rapid Oven):

• Toast
• Bake
• Broil
• Bagel
• Reheat
• Keep Warm

Bottom Oven (Convection & Air Fry):

• Air Fry
• Roast
• Whole Roast
• Pizza
• Convection Bake
• Dehydrate

From golden toast to roasted vegetables, this oven handles both quick snacks and full meals. The top oven heats up fast and is ideal for smaller portions, while the bottom oven offers more power and room for larger dishes.

No Flavour Crossover with FlavorSeal Technology

One concern with using two ovens in the same appliance is whether the flavours will mix. The Ninja DCT451 uses FlavorSeal Technology, which creates a strong barrier between the two chambers. You can roast garlic in the bottom oven while baking a dessert above, and the flavours stay completely separate.

Cleaning it? Not bad.

If you are worried that having two ovens would be a pain to clean, but they are actually pretty low-maintenance. However, despite its dual-oven design, the Ninja DCT451 is reasonably easy to clean. The crumb trays slide out easily, and the interior wipes clean once it cools down. You can even remove both glass panels on the FlexDoor for a deeper clean (which I appreciated after roasting BBQ ribs on a Sunday).

What Customers Are Saying About the Ninja Smart Double Oven

This model has earned high praise from users across platforms. On Reddit, one user noted:

“The Smart Finish works beautifully, and it’s replaced almost every other small appliance I had.”

TechRadar and other review outlets have also praised the DCT451 for its consistency, space-saving design, and cooking speed. Compared to the earlier DCT401, reviewers often highlight the DCT451’s built-in thermometer as a significant improvement.

Final Verdict: Should You Buy the Ninja 12-in-1 Smart Oven?

The Ninja DCT451 12-in-1 Smart Double Oven with FlexDoor offers serious functionality in a compact, countertop-friendly design. With Smart Finish, dual independent ovens, and 12 versatile cooking modes, it brings flexibility and control to your kitchen without the need for multiple appliances.

If you’re looking for a time-saving solution that can handle full meals, snacks, reheats, and meal prep all in one unit, this oven checks every box. The built-in thermometer, flavour separation, and thoughtful design make it a standout choice among modern kitchen tools.