If using extra-firm tofu: Press the tofu using a tea towel (or paper towels) and a tofu press or a chopping board with a heavy object.
Rip the tofu into roughly one-inch pieces.
Using a bowl or other container with a lid, shake the tofu with the cornstarch, salt, and pepper.
To Air Fry: Preheat air fryer to 390° F (200°C). Place tofu in the air fryer basket, spray or toss in oil, and shake the basket until the tofu is distributed evenly. Air fry for about 15 minutes or until the tofu is golden brown, pausing about every 5 minutes to shake the air fryer basket.
To Bake: Preheat oven to 400°F (200°C). Spread the tofu onto a greased or lined baking sheet. Spray generously with cooking spray or toss in oil and bake for about 15-20 minutes or until golden brown.
To Pan Fry: Heat a medium to large skillet over medium-high heat. Add enough olive oil or other high-quality oil to make a shallow layer of oil in the pan. When the oil is hot (sizzles when a drop of water is added), add the tofu. Use a heat-resistant spatula to turn the tofu until it is crisp on all sides, about 5-10 minutes. When done, transfer to a cooling rack.
While the tofu cooks, add the sauce ingredients to a medium bowl. Whisk them all together to combine. When the tofu is done cooking, toss them in the sauce and serve.
Store leftovers in the fridge for up to 5 days. If you can, keep the sauce separate so that the tofu stays crispy.
Notes
Nutrition facts calculated with 16 ounces tofu. Nutrition facts will vary based on brands and substitutions.