Cut the chicken breast into bite-sized pieces.
Blanch the brown rice cakes in boiling water for 2 minutes.
Slice the onion and green onion.
Heat olive oil in a pan and stir-fry the chicken breast.
When the chicken breast is cooked, add the onion and green onion and stir-fry.
Add the brown rice cakes, gochujang (Korean red chili paste), red chili powder, soy sauce, minced garlic, and water. Bring to a boil.
Once all ingredients are combined, season with salt and pepper to taste.
Turn off the heat and sprinkle sesame seeds on top to finish.