01 - Preheat the air fryer to 400°F for 3 minutes.
02 - Toss tofu cubes with 2 tablespoons soy sauce and let marinate for 5 minutes.
03 - Sprinkle tofu with cornstarch and garlic powder, drizzle sesame oil, and toss gently to coat evenly.
04 - Arrange tofu cubes in a single layer in the air fryer basket; cook for 12–15 minutes, shaking halfway, until crispy and golden.
05 - In a small saucepan, combine soy sauce, maple syrup, rice vinegar, water, garlic, and ginger; simmer over medium heat.
06 - Mix 1 teaspoon cornstarch with a splash of water to form a slurry; stir into the simmering sauce and cook until thickened, about 1–2 minutes, then remove from heat.
07 - Transfer crispy tofu to a large bowl, pour glaze over, and toss gently to coat.
08 - Serve immediately, garnished with sesame seeds and spring onions if desired.