Press the extra firm tofu for 15 minutes to remove excess moisture, then cut into 1-inch cubes.
Place the tofu cubes in a bowl and toss gently with arrowroot starch until lightly coated.
Heat a large non-stick skillet over medium-high heat with the avocado oil.
Add the tofu to the skillet and sear until golden and crispy on all sides, then remove and set aside.
In the same skillet, add the broccoli florets, sliced red bell pepper, and edamame, sautéing for 4-5 minutes until tender-crisp.
In a small bowl, whisk together the tamari, toasted sesame oil, minced ginger, minced garlic, rice vinegar, and red pepper flakes.
Return the crispy tofu to the skillet and pour the sauce over the mixture, tossing for 1 minute until well coated.
Remove from heat and garnish with sesame seeds before serving.