Follow these simple steps to create mouth-watering Black Pepper Chicken:

1. Prepare the Chicken: Slice the boneless chicken breast into thin strips and season with a pinch of salt and freshly cracked black pepper.
2. Heat the Oil: In a large skillet or wok, heat the vegetable oil over medium-high heat until shimmering.
3. Cook the Chicken: Add the sliced chicken to the skillet in a single layer. Cook for about 5-7 minutes until golden brown and cooked through. Remove the chicken from the skillet and set aside.
4. Sauté the Vegetables: In the same skillet, add the sliced onion and bell pepper. Sauté for 3-4 minutes until they are tender and slightly caramelized.
5. Add Garlic: Stir in the minced garlic and cook for an additional 30 seconds until fragrant.
6. Combine Ingredients: Return the cooked chicken to the skillet. Add the soy sauce and oyster sauce (if using). Stir well to coat the chicken and vegetables.
7. Thicken the Sauce: In a small bowl, mix the cornstarch with water to create a slurry. Pour this mixture into the skillet while stirring continuously, allowing the sauce to thicken for about 1-2 minutes.
8. Adjust Seasoning: Taste and adjust seasoning with salt and additional black pepper as desired.
9. Serve: Remove from heat and garnish with chopped green onions for added freshness.

These steps should help you create a delicious Black Pepper Chicken that doesn’t compromise on flavor.