Cut konjac rice cakes, fish cakes, onion, and green onion into bite-sized pieces.
Heat olive oil in a pan and sauté onion and green onion.
Add konjac rice cakes and fish cakes and stir-fry, then pour in water.
Add gochujang (Korean chili paste), chili powder, minced garlic, soy sauce, and stevia, then bring to a boil.
Once the sauce thickens, it's ready to serve.