Press the extra firm tofu for 15 minutes to remove excess moisture, then cut into 1-inch cubes.
In a small bowl, whisk together the peanut butter, tamari, lime juice, grated ginger, minced garlic, and sriracha until smooth.
Heat the toasted sesame oil in a large non-stick skillet over medium-high heat.
Season the tofu cubes with sea salt and black pepper, then add them to the skillet.
Sear the tofu for 8-10 minutes, turning occasionally, until all sides are golden and crispy.
While the tofu cooks, steam the broccoli florets and shelled edamame until tender-crisp.
Add the steamed vegetables to the skillet with the tofu and pour the peanut sauce over the top.
Toss everything together for 1-2 minutes until the sauce is thickened and coats the ingredients evenly.
Serve immediately while hot and crispy.