01 - Set air fryer to 400°F and preheat for 3 minutes.
02 - Toss tofu cubes with cornstarch, olive oil, salt, and black pepper until evenly coated.
03 - Place tofu cubes 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 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 the cornstarch slurry and cook until the glaze thickens, about 1 to 2 minutes. Remove from heat.
07 - Transfer crispy tofu to a large bowl, pour the warm soy glaze over it, and toss gently to coat.
08 - Serve immediately, topped with toasted sesame seeds and sliced green onions if desired.