Open the tofu and drain, press the tofu between two pieces of paper towels or kitchen towel. Place a cast iron pan or something heavy on top. Let stand for 20 minutes to drain the excess liquid.
Cut the tofu into cubes and toss with oil, soy sauce, and black pepper. Add cornstarch and toss until coated, let sit for a minute, toss again.
Carefully lift the tofu cubes out of the bowl, leaving the excess starch in the bowl. Place on the hot baking tray.
Bake for 15 minutes, then use a spatula to flip each cube of tofu. Bake for an additional 15-20 minutes until the tofu is golden brown. Serve as desired.
Notes
Storage: Store any leftover baked tofu in an airtight container for up to 5 days.