Blanch the fried tofu in boiling water to remove excess oil, then squeeze out the moisture.
Cut the onion, carrot, cabbage, and green onion into bite-sized pieces.
Heat some cooking oil in a pan and stir-fry the onion, carrot, and cabbage.
Add the rice cakes and fried tofu and stir-fry together.
Add gochujang (red chili paste), soy sauce, sugar, red pepper powder, and water. Bring to a boil.
Simmer over medium heat until the rice cakes become soft.
Add green onion and minced garlic, then bring to a boil once more.
Transfer to a bowl to serve.