Press the tofu for 15 minutes to remove excess moisture then cut into 1-inch cubes.
In a small bowl whisk together the tamari, rice vinegar, toasted sesame oil, and red pepper flakes to create the sauce.
Heat the avocado oil in a large skillet or wok over medium-high heat.
Add the tofu cubes to the skillet and sear until golden brown and crispy on all sides, which takes about 8-10 minutes.
Remove the crispy tofu from the pan and set it aside on a plate.
Add the broccoli florets, sliced red bell pepper, and shelled edamame to the same pan and stir-fry for 4-5 minutes until tender-crisp.
Stir in the minced garlic and grated fresh ginger, cooking for about 1 minute until the aromatics are fragrant.
Return the cooked tofu to the pan and pour the prepared sauce over the tofu and vegetable mixture.
Toss everything together for 1-2 minutes until the sauce has thickened slightly and coats all ingredients evenly.
Garnish the stir-fry with thinly sliced green onions and serve immediately while hot.