Finely chop the tofu, onion, and green onion.
Heat olive oil in a pan and sauté the minced garlic.
Add the chopped tofu, onion, and green onion, and stir-fry together.
Add low-sugar gochujang, doenjang, erythritol, soy sauce, and sesame oil. Stir and cook over medium heat until well mixed.
When the sauce becomes glossy, turn off the heat and sprinkle sesame seeds on top to finish.