Press the extra firm tofu for 15 minutes to remove excess moisture, then cut into 1/2-inch cubes.
In a small bowl, whisk together the tamari, toasted sesame oil, rice vinegar, grated ginger, and garlic powder to create the dressing.
Heat a non-stick skillet over medium-high heat and sear the tofu cubes for 5-7 minutes, turning occasionally until golden and crispy on the edges.
Lightly steam the cauliflower rice in a separate pan over medium heat for 3-4 minutes until tender, then transfer to a serving bowl.
Toss the warm tofu cubes in half of the prepared dressing until well coated.
Arrange the dressed tofu, edamame, sliced cucumber, radishes, and avocado slices over the bed of cauliflower rice.
Drizzle the remaining dressing over the bowl and garnish with hemp seeds, black sesame seeds, and thinly sliced green onions.