In a small bowl, whisk together the gochujang, garlic, maple syrup, tamari and rice vinegar until the gochujang is fully incorporated. Set aside.
Break the tofu into bite-sized pieces and place in a large mixing bowl. Sprinkle in the cornstarch and nutritional yeast. Toss using a silicone spatula until the tofu is well coated.
Heat the avocado oil in a nonstick pan set over medium-high heat. Add the tofu, leaving behind any excess cornstarch, nutritional yeast and tiny tofu pieces.
Cook, tossing the tofu often using a silicone spatula, until golden and crispy at the edges, about 7 to 10 minutes.
Reduce the heat to medium. Pour the gochujang mixture over the tofu and cook, tossing, for 1 minute or until the tofu is coated and glistening.
Remove from the heat and garnish with sliced green onions and sesame seeds. Serve hot alongside rice or any of your favourite sides.
Store leftovers in the fridge in an airtight container for up to 24 hours.