Preheat oven to 400°F and line a baking sheet with parchment paper.
Press the tofu for 15 minutes to remove excess moisture, then cut into 1-inch cubes.
In a bowl, toss tofu with cornstarch, garlic powder, ginger powder, sea salt, and black pepper until evenly coated.
Spread tofu on the baking sheet and bake for 25-30 minutes, flipping halfway, until the edges are golden and crispy.
While tofu bakes, whisk together tamari, chili garlic sauce, maple syrup, and sesame oil in a small pan over low heat until slightly thickened.
Steam the edamame until tender and bright green.
Toss the crispy tofu in the warm sauce and serve immediately over the edamame, garnished with sliced green onions and sesame seeds.