Creating Black Pepper Beef Stir-Fry can be straightforward if you follow these simple steps:

1. Prepare the Beef: In a bowl, combine the sliced beef with soy sauce, oyster sauce, and cornstarch. Mix well and let it marinate for at least 10 minutes.
2. Heat the Oil: In a large skillet or wok, heat the vegetable oil over medium-high heat until shimmering.
3. Cook the Beef: Add the marinated beef to the skillet in a single layer. Stir-fry for 3-4 minutes until browned and cooked through. Remove the beef from the skillet and set aside.
4. Sauté the Vegetables: In the same skillet, add the minced garlic and sliced onions. Stir-fry for 1 minute until fragrant. Then, add the bell pepper, broccoli, and carrots. Cook for an additional 3-4 minutes until the vegetables are crisp-tender.
5. Combine Ingredients: Return the cooked beef to the skillet and sprinkle the freshly ground black pepper over the mixture. Stir well to combine all ingredients.
6. Finish Cooking: Stir-fry everything together for another 1-2 minutes to allow the flavors to meld.
7. Serve: Remove from heat and serve the Black Pepper Beef Stir-Fry over cooked rice or noodles.

These steps will guide you in creating this incredible dish effortlessly.