01 - Set air fryer to 400°F and preheat for 3 minutes.
02 - Toss tofu cubes with cornstarch, olive oil, salt, and pepper until evenly coated.
03 - Place tofu in a single layer in the air fryer basket, working in batches if necessary.
04 - Cook tofu for 15 to 18 minutes, shaking the basket halfway through, until cubes are golden and crispy.
05 - Combine soy sauce, maple syrup, rice vinegar, sesame oil, garlic, and ginger in a small saucepan and bring to a simmer over medium heat.
06 - Whisk in cornstarch slurry and cook for 1 to 2 minutes until the glaze thickens, then remove from heat.
07 - Transfer crispy tofu to a large bowl, pour warm glaze over it, and toss gently to coat evenly.
08 - Serve immediately, garnished with toasted sesame seeds and sliced green onions if desired.