Press extra-firm tofu for 15-30 minutes, cube to 2.5cm / 1 inch, toss with oil and 1 tbsp cornstarch per block, and air-fry at 190°C / 375°F for 15 to 20 minutes, shaking the basket every 5 minutes. The cornstarch coating is the secret to crispy edges. Tofu doesn't have an internal temp target — it's done when golden brown and crisp on multiple sides.
| Size | Time |
|---|---|
| Small cubes (1.5cm / ½ inch) | 11–14 min |
| Standard cubes (2.5cm / 1 inch) | 15–20 min |
| Large cubes / triangles (3.5cm / 1½ inch) | 20–25 min |
Tofu cubes should be deeply golden on multiple sides — not just the bottom — with a visible crust. Inside, the texture is firm but not dry. Pale tofu means undercooked or skipped the cornstarch coating. Hard, brittle cubes mean overcooked or pressed too much.
Tofu's water content is what stops it from getting crispy in the oven or pan. The air fryer's rapid circulation strips that surface moisture fast — and a cornstarch coating absorbs more moisture as it cooks, then crisps into a hard shell. That's the same principle as Chinese-style crispy tofu, just achieved with hot air instead of deep frying.
Read the science →Extra-firm or super-firm only. Soft, silken, and medium tofu have too much water and fall apart in the basket. Look for blocks labelled 'extra-firm' or 'super-firm' — the latter needs no pressing.
Yes for extra-firm; not needed for super-firm. Wrap extra-firm in towels and press with a heavy book or pan for 15-30 minutes. The drier the tofu, the crispier the result. Skip this step for super-firm tofu, which is already pressed.
Three usual causes: wrong tofu type (use extra-firm or super-firm), no pressing (press 15-30 min), or no cornstarch (1 tbsp per block transforms texture).
Yes — but blot it dry before tossing with oil and cornstarch. Wet marinade ingredients steam in the basket and prevent crisping. Marinate 30 min to a few hours in the fridge, then drain and pat dry.
Cooking times are starting points compiled from authoritative sources and verified against the Renardo Cuisine air fryer testing chart. Your appliance wattage, food thickness, and starting temperature may shift results — always verify protein doneness with an instant-read thermometer.
