01 - Wrap the tofu block in paper towels and place a heavy object on top. Let it drain for 10-15 minutes to remove excess moisture.
02 - Cut the tofu into 3/4-inch cubes.
03 - In a bowl, toss tofu cubes with cornstarch, salt, and pepper until evenly coated.
04 - Heat oil in a large nonstick skillet over medium-high heat. Add tofu cubes in a single layer. Cook for 3-4 minutes per side, turning until all sides are golden and crispy. Remove tofu and set aside on a plate lined with paper towels.
05 - In the same skillet (wipe out excess oil if needed), combine maple syrup, soy sauce, sriracha, rice vinegar, garlic, and ginger. Bring to a simmer over medium heat.
06 - Add the crispy tofu back to the pan and toss to coat in the sauce. Cook for 2-3 minutes, stirring, until the sauce thickens and evenly glazes the tofu.
07 - Transfer to a serving plate. Garnish with sesame seeds and green onions, if desired. Serve hot.