Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Press the tofu firmly between paper towels to remove excess moisture, then cut it into 1-inch cubes.
Chop the broccoli into small florets and slice the red bell pepper into bite-sized pieces.
In a large mixing bowl, toss the tofu cubes, broccoli, and bell pepper with the sesame oil, garlic powder, sea salt, black pepper, and nutritional yeast until evenly coated.
Spread the tofu and vegetable mixture in a single layer on the prepared baking sheet and roast for 25 minutes, flipping halfway through, until the tofu is golden and the vegetables are tender.
While the tofu roasts, whisk together the tahini, tamari, and lemon juice in a small bowl to create a smooth dressing.
Assemble the bowl by placing the warm cooked quinoa and edamame at the base.
Top with the roasted tofu and vegetable mixture, then drizzle the savory tahini dressing over the entire bowl before serving.