To prepare the block of tofu, cut into cubes and place in a large bowl. Toss the cubes with Bragg's liquid aminos or low-sodium soy sauce. Allow the tofu cubes to marinate for about 20 minutes. In the meantime, prepare the sesame sauce.
To prepare the sauce, combine vegetable broth, maple syrup, Bragg's liquid aminos, lemon juice, sesame oil, cornstarch, grated ginger, and sesame oil in a medium bowl and stir to combine. Set aside.
Toss the tofu cubes with cornstarch and gluten-free flour until fully coated. Heat the oil in a non-stick skillet over medium-high heat. Add the tofu cubes and fry on both sides until the pieces are crisp and golden brown.
Add the sesame sauce to the pan and gently stir to coat the tofu cubes. Cook until the sauce becomes bubbly and thick. Sprinkle with sesame seeds and serve