Cut the tofu and mushrooms into bite-sized pieces.
Finely chop the onion, green onion, and garlic.
Add cooking oil to a pan and sauté the garlic and green onion.
Add the onion and mushrooms, then stir-fry.
Add the soft tofu and mash it while mixing.
Season with soy sauce, gochujang, and sesame oil.
Place the mixture over rice and sprinkle with sesame seeds to finish.