Press the tofu for 15 minutes to remove excess moisture, then cut into 1-inch cubes.
In a small bowl, whisk together the honey, tamari, rice vinegar, minced garlic, grated ginger, and red pepper flakes to create the sauce.
Toss the tofu cubes with cornstarch, sea salt, and black pepper until evenly coated.
Heat sesame oil in a large skillet or wok over medium-high heat.
Add tofu to the skillet and sear until golden brown and crispy on all sides, about 8-10 minutes.
Add the broccoli, sliced bell pepper, and edamame to the pan, sautéing for 3-4 minutes until the vegetables are tender-crisp.
Pour the honey-garlic sauce over the tofu and vegetables, stirring constantly for 1-2 minutes until the sauce thickens and coats everything.
Serve immediately while hot.