Cut the tofu into small cubes.
Finely chop the zucchini, onion, green onion, and spicy chili pepper.
Pour water into a pot, add soybean paste and red pepper powder, and bring to a boil.
Add the chopped vegetables and tofu to the pot and boil.
Add minced garlic, simmer a little longer, then drizzle with sesame oil.
When the texture thickens, it's ready to serve.