Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Press the extra firm tofu between paper towels for at least 10 minutes to remove excess moisture, then cut into 1-inch cubes.
In a medium bowl, toss the tofu cubes with cornstarch, sea salt, and black pepper until evenly coated.
Spread the tofu in a single layer on the baking sheet and bake for 25-30 minutes, flipping halfway, until golden and crispy.
While the tofu bakes, whisk together the peanut butter, tamari, rice vinegar, maple syrup, sriracha, grated ginger, and minced garlic in a small bowl.
Steam the broccoli florets and shelled edamame for 5-7 minutes until they are bright green and tender-crisp.
Transfer the crispy tofu to a large bowl, pour the peanut sauce over it, and toss gently to coat every piece.
Serve the saucy tofu immediately alongside the steamed broccoli and edamame for a complete, clean-eating meal.