01 - Preheat oven to 425°F. Line a baking sheet with parchment paper.
02 - Press the tofu for at least 10 minutes to remove excess moisture, then cut into 1-inch cubes.
03 - In a mixing bowl, toss tofu cubes with oil, cornstarch, salt, and pepper until evenly coated.
04 - Arrange tofu cubes in a single layer on the prepared baking sheet. Bake for 25 to 30 minutes, flipping halfway, until golden and crispy.
05 - Whisk together peanut butter, soy sauce, maple syrup, vinegar, sesame oil, garlic, and ginger in a bowl. Add warm water one tablespoon at a time until sauce is smooth and pourable.
06 - Transfer baked tofu to a large bowl, pour over peanut sauce, and gently toss to coat.
07 - Serve immediately topped with toasted sesame seeds, sliced spring onions, and fresh cilantro if desired.