Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Press the firm tofu between heavy plates and paper towels for 10 minutes to remove excess moisture, then cut into 1-inch cubes.
In a medium bowl, toss the tofu cubes with arrowroot starch, garlic powder, and ground ginger until every piece is evenly coated.
Spread the tofu onto the prepared baking sheet and drizzle with toasted sesame oil, then bake for 25-30 minutes until golden and crispy.
While the tofu is in the oven, whisk together the peanut butter, tamari, rice vinegar, and sriracha in a small bowl until smooth.
Steam the broccoli florets and shelled edamame for 5-6 minutes until they are tender-crisp and bright green.
Remove the tofu from the oven, toss it immediately in the peanut sauce, and serve over the steamed vegetables topped with hemp seeds.