Cut the tofu into bite-sized pieces.
Heat cooking oil in a pan and pan-fry the tofu until golden brown.
Prepare the sauce by mixing soy sauce, red pepper powder, minced garlic, sugar, sesame oil, green onion, and water.
Pour the sauce evenly over the fried tofu.
Simmer over medium-low heat until the tofu absorbs the sauce.
Garnish with chopped scallions and sesame seeds to finish.