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 coconut aminos, rice vinegar, toasted sesame oil, minced ginger, and minced garlic to create the stir-fry sauce.
Heat the avocado oil in a large skillet or wok over medium-high heat until shimmering.
Add the tofu cubes to the skillet and sear for 8-10 minutes, turning occasionally until all sides are golden brown and crispy.
Remove the tofu from the pan and set aside on a plate.
In the same skillet, add the broccoli florets, snap peas, and sliced red bell pepper with a tablespoon of water to help steam.
Sauté the vegetables for 4-5 minutes until they are tender-crisp and retain their bright color.
Return the tofu to the skillet and pour the prepared ginger-sesame sauce over the mixture.
Toss everything together for 1-2 minutes until the sauce coats the ingredients and thickens slightly.
Season with sea salt and black pepper, then garnish with toasted sesame seeds before serving.