- Toss the sliced steak with cornstarch in a bowl until coated. Set aside. 
- In another bowl, whisk together soy sauce, oyster sauce, hoisin sauce, brown sugar, garlic, ginger, and beef broth. 
- Heat 1 tablespoon of vegetable oil in a large skillet over medium-high heat. Add the steak and cook until browned. Remove and set aside. 
- In the same skillet, add another tablespoon of oil. Toss in the peppers and onion. Sauté until slightly tender but still crisp. 
- Pour in the sauce and return the steak to the skillet. Stir everything together and let it simmer for a few minutes until the sauce thickens. 
- Serve over rice and sprinkle with extra black pepper if you’re feeling bold.