Drain the tofu. Wrap it in a clean kitchen towel and place it on a plate. Place a heavy weight, such as a frying pan with soup cans in it, on top of the tofu to press it. Set the tofu aside for 30 minutes. Meanwhile, prepare your lettuce, vegetable, and peanuts.
In a medium bowl, whisk together the coconut aminos, tamari, sriracha, sesame oil, and garlic. Drain any excess moisture away from the tofu and dry it with paper towels.
Slice the tofu into 3/4-inch cubes. Place them in the marinade and toss carefully to coat well. Set this aside for 15 minutes.
Preheat the oven to 400°F. Line a sheet pan with parchment paper.
In a large non-stick or cast iron skillet over medium heat, warm enough oil to generously coat the bottom of the pan.
Place the cornstarch in a shallow bowl. Gently toss the tofu cubes in the cornstarch until well coated. When the oil is hot, sear the tofu on all sides in small batches, for about 6 minutes. You will need to use a fork or small spatula to turn them. Once the tofu is golden brown, transfer the cubes to the lined baking sheet. Continue until all the tofu is seared.
Place the pan with the tofu in the preheated oven and bake for about 12 minutes until the texture is firm and the surface is crisp.