Preheat oven to 400° F. Lightly spray a baking tray with cooking spray.
Drain and pat tofu dry with paper towels. Slice into ½-inch cubes.
Place cornstarch in a shallow bowl. Add tofu a few pieces at a time and toss until coated.
Arrange tofu cubes in a single layer on the baking sheet. Repeat with remaining tofu.
Spray top of tofu with oil or cooking spray. Bake for 10 minutes, flip the cubes, then bake for another 10 minutes until golden and slightly crisp.
Make the Sauce
In a small saucepan, combine soy sauce, garlic, honey, sesame oil, miso paste, sriracha, vinegar, and red pepper flakes.
Bring to a gentle simmer over medium heat. Cook 5-7 minutes to reduce and intensify flavor.
Add the cornstarch slurry and continue cooking for 2-3 more minutes to thicken. Remove from heat and set aside. It will continue to thicken as it sits.
Taste and adjust heat, sweetness, or acidity as needed.
Finish the Tofu
Remove tofu from oven and transfer to a large bowl.
Pour the sticky glaze over the tofu and toss gently to coat.
Garnish with sesame seeds and green onions if desired.
Serve immediately — on rice, noodles, or as a protein base in bowls or wraps.
Notes
Taste test: Before you toss the tofu in the sauce, taste the sauce and adjust its sweetness or spice to your own personal preference.
Draining tofu: If you’re using extra-firm tofu, you shouldn’t need to press it too much. Just pour out any extra water and pat the block dry.
Cornstarch: You don’t need to coat the tofu cubes in cornstarch before baking, but it does give them a much crispier texture.