Combine the soy sauce, olive oil, arrowroot powder (used in this recipe instead of corn starch), garlic powder, ground ginger, sea salt and ground pepper. Whisk together until combined. Set aside while you prepare the tofu.
Then you need to prepare the tofu for marinating. It's important to remove as much liquid from the tofu as possible for best results.
Start by draining the excess liquid from the block of tofu.
Then, cover the tofu with paper towels. Using a tofu press or a heavy plate, press the block of tofu until the liquid has been removed. Since we want crispy tofu, you do not want much water remaining within the tofu before baking.
Cut the pressed tofu into 1-2 inch cubes based on size preferences.
Toss the cubed tofu in the tofu marinade and let it marinate for at least 30 minutes and up to 2 hours.
Line a baking sheet with parchment paper. Spread the tofu cubes in a single layer on the lined baking sheet.
Bake tofu at a high temperature of 400 degrees F for 25 - 30 minutes until crispy and lightly browned.