1. In a large skillet or wok, melt the butter over medium heat. Add the sliced onion and cook for 2–3 minutes until softened. Then, stir in the minced garlic and cook for another 30 seconds.

2. Next, add the diced chicken breast to the skillet. Cook for 5–7 minutes, stirring occasionally, until the chicken is cooked through and lightly browned.

3. Now, it’s time to toss in the chopped cabbage, bell pepper, and julienned carrot. Sauté for another 4–5 minutes, until the veggies are just tender but still maintain a satisfying crunch.

4. Pour in the soy sauce, oyster sauce (if using), and sesame oil. Sprinkle in the black pepper, salt, and red pepper flakes (if desired). Stir everything together to ensure the flavors are evenly distributed.

5. If you prefer a thicker, more luxurious stir-fry sauce, simply add the cornstarch slurry and stir until the sauce has thickened, about 1–2 minutes.

6. Remove the Chicken Cabbage Stir-Fry from the heat and garnish with chopped green onions. Serve this flavorful dish hot over a bed of steaming rice or noodles for a complete and satisfying meal.