Press the firm tofu for 15 minutes to remove excess moisture, then cut into 1-inch cubes.
In a small bowl, whisk together the tamari, sesame oil, lemon juice, garlic powder, sea salt, and black pepper to create the marinade.
Toss the tofu cubes in half of the prepared dressing and let marinate for 10 minutes to absorb the flavors.
Steam the asparagus spears and sliced beets until tender-crisp, then set aside to cool slightly.
Heat a non-stick skillet over medium-high heat and sear the tofu until golden and crisp on all sides.
Assemble the salad by layering the asparagus, beets, and seared tofu on a plate, then drizzle with the remaining dressing.
Finish by sprinkling hemp hearts over the top for a nutty crunch and a boost of plant-based protein.