Press the firm tofu for 15 minutes to remove excess moisture, then cut into 1-inch cubes.
In a medium bowl, toss the tofu cubes with arrowroot powder, garlic powder, and ground ginger until evenly coated.
Heat avocado oil in a large non-stick skillet over medium-high heat.
Place tofu in the skillet and sear for 3-4 minutes per side until each face is golden brown and crispy.
Add the broccoli florets and shelled edamame to the skillet with a tablespoon of water; cover with a lid to steam for 3 minutes.
In a small jar or bowl, whisk together the tamari, toasted sesame oil, and rice vinegar to create the glaze.
Remove the lid and pour the sauce over the tofu and vegetables, tossing constantly for 1 minute until the sauce thickens and coats everything glossy.
Garnish with thinly sliced green onions and sesame seeds before serving hot.