Press the Tofu: If using extra-firm tofu, press it for at least 15-30 minutes to remove excess water. This is crucial for crispiness. You can use a tofu press or wrap the block in paper towels, place it between two plates, and weigh it down with something heavy.

Cut the Tofu: Once pressed, cut the tofu into 1-inch cubes.

Toss with Oil: In a medium bowl, gently toss the tofu cubes with olive oil until lightly coated.

Coat with Cornstarch & Seasonings: Add the cornstarch, salt, black pepper, and garlic powder (if using) to the bowl. Toss again until all tofu cubes are evenly coated, shaking off any visible excess cornstarch.

Preheat Air Fryer: Preheat your air fryer to 400°F (200°C) for 5 minutes.

Air Fry the Tofu: Arrange the coated tofu cubes in a single layer in the air fryer basket, ensuring not to overcrowd it. Cook in batches if necessary.

Cook Until Crispy: Air fry for 18-25 minutes, shaking the basket every 5-7 minutes to ensure even browning and crispiness. The tofu should be golden brown and crunchy on the outside.

Serve: Serve immediately as a side, in stir-fries, salads, or bowls.