Press the firm tofu for 15 minutes to remove excess moisture, then cut into even 1-inch cubes.
In a small glass bowl, whisk together the tamari, maple syrup, grated fresh ginger, and minced garlic to create the glaze.
Heat the toasted sesame oil in a large non-stick skillet or wok over medium-high heat until shimmering.
Add the tofu cubes to the pan in a single layer and sear for 8-10 minutes, turning until every side is golden brown.
Add the broccoli florets, sliced red bell pepper, and shelled edamame to the skillet.
Stir-fry the vegetables with the tofu for 4-5 minutes until the broccoli is bright green and tender-crisp.
Pour the ginger-sesame sauce over the stir-fry and toss continuously for 1 minute until the glaze thickens and coats everything.
Season with sea salt and black pepper, then garnish with sesame seeds before serving hot.