Tofu marinade: In a small bowl, whisk together all tofu marinade ingredients. Add tofu to the bowl and place the bowl in the refrigerator to marinate for 10-20 minutes.
Buddha bowl: Preheat oven to 400 degrees F and arrange marinated tofu in a single layer on a lined baking sheet. Bake tofu for 40 minutes, tossing halfway. Assemble bowls with carrots, broccoli, baked tofu, brown rice, and sesame seeds.
Lemon-tahini dressing: In a medium bowl, whisk together lemon tahini ingredients until completely combined. Top each bowl with desired amount of dressing.