For best results, cut tofu into ½ inch cubes. Preheat air fryer to 375 degrees Fahrenheit. Spray air fryer basket with olive or avocado oil spray, the arrange tofu cubes in single layer in basket. Lightly spray top of tofu with olive or avocado oil. Return fryer basket to air fryer and cook tofu for 10 minutes. Shake basket to promote even cooking, then return to fryer and cook for 5 more minutes until crisp and lightly browned.
If recipe calls for marinating tofu, cut tofu into ½ inch cubes before marinating. Remove cubes from marinade and drain well, then follow directions for air frying as above.