Drain the tofu for about an hour. Use a tofu press if you have one, or put the block of tofu in a strainer, top with paper towels, and a mortar or other weighty object (protect it from getting wet from the paper towels, if necessary)
1 block (14 ounces) extra firm tofu
Preheat the oven to 400°F.
Cut the tofu into ½ inch cubes.
In a bowl, mix soy sauce and sesame oil. Gently toss tofu to coat, then add the five spice powder and cornstarch and again gently toss.
2 tablespoon soy sauce, 1 tablespoon sesame oil, ½ teaspoon Chinese five spice powder, 1 tablespoon cornstarch
Lay tofu out on parchment-lined baking sheet so pieces are not touching. Bake for 30 to 40 minutes, stirring once or twice, until toasty in color.