Preheat your oven to 400 degrees Fahrenheit and line a large baking sheet with parchment paper.
Press the extra firm tofu for at least 15 minutes to remove excess moisture, then cut into 1-inch cubes.
In a medium bowl, toss the tofu cubes with cornstarch, avocado oil, sea salt, and black pepper until evenly coated.
Spread the tofu in a single layer on the baking sheet and bake for 25 to 30 minutes, flipping halfway through, until golden and crispy.
While the tofu bakes, whisk together the peanut butter, tamari, rice vinegar, maple syrup, and grated ginger in a small bowl until smooth.
Steam the broccoli florets and shelled edamame until tender-crisp and bright green.
Transfer the crispy tofu to a bowl, drizzle with the peanut sauce, and toss gently to coat before serving alongside the steamed vegetables.