Do you need to preheat the air fryer for air-fryer tofu cubes?

Question

I am making crispy air-fryer tofu cubes tonight. Is preheating the air fryer actually needed to get them crispy, or does it turn out fine without it? Thanks

Answer 1

Hello Sophie,

To give you a direct answer: you can still achieve a decent result without preheating, but taking three to five minutes to preheat your air fryer makes a noticeable difference if your goal is maximum crispiness.

Here is why preheating helps so much with tofu:

When tofu cubes enter an already hot cooking chamber, the exterior immediately begins to sear and evaporate surface moisture rather than slowly warming up. If you start from a cold unit, the tofu tends to steam during the initial warm-up period, which can soften the outer coating and slightly prolong the cooking process.

If you choose not to preheat, you will simply want to add about three to four minutes to your total cook time and check on the tofu towards the end.

To guarantee the crispiest tofu cubes possible, I would also recommend these few steps:

1. Press your extra-firm tofu for at least fifteen to twenty minutes to expel excess moisture.

2. Cut it into uniform cubes and toss them gently with a light coating of oil and a tablespoon of cornstarch. The starch creates a delicate crust that crisps up beautifully under convection heat.

3. Preheat the air fryer to 390°F or 400°F (about 200°C) for three to five minutes before adding the tofu.

4. Arrange the cubes in a single layer with space between each piece so the air circulates freely, and give the basket a thorough shake halfway through cooking.

I hope this helps you make a wonderful dinner tonight. Please feel free to ask if you need any adjustments for your specific recipe or model!

Comments

The explanation about moisture evaporation is spot on. In my experience when cooking skewers on the grill or in the air fryer starting with high heat keeps the food from sticking and steaming. If your not preheating the tofu tends to release its liquid slowly and become rubbery before it crisps up. Doing a quick five minute preheat makes the cornstarch layer set immediately.

---

Preheating definitely speeds things up for supper, and that tip about tossing the pieces with cornstarch is spot on. Whenever I pop a batch into our hot basket, that crust sets right away instead of turning gummy, which makes a big difference for a fast family meal.

However, you can honestly skip the whole twenty minutes of pressing the block beforehand if you preheat all the way to 400 degrees. That intense convection heat vaporizes all the trapped water from the curds right away on contact, so squeezing it under heavy cast iron skillets is really just extra work you do not need on a busy weeknight.

Answer 2

Preheating is not strictly necessary, but 3 minutes of warm-up makes the crust noticeably crispier. Without it, simply add 3 extra minutes.

Answer 3

You do not strictly have to preheat it, but doing so gets the exterior crispier a bit faster. If you start from cold, the tofu simply needs about three to four extra minutes in the basket to reach the same level of crispness.

Make sure the cubes are dried well with paper towles and tossed with a small amount of oil and cornstarch before cooking. It turns out fine either way as long as you shake the basket halfway through.

Answer 4

You do not need to preheat your machine at all for tofu. Just put the cubes in cold and cook them on low heat for ten minutes so they dry out before you crisp them.