Creating Easy Beef Stir Fry is a straightforward process. Follow these step-by-step instructions for a successful outcome:

1. Prepare the Ingredients: Slice the beef and vegetables, and measure out all the sauces and seasonings.
2. Marinate the Beef: In a bowl, combine the sliced beef, soy sauce, cornstarch, and black pepper. Let it marinate for about 10 minutes while you prepare other ingredients.
3. Heat the Oil: In a large pan or wok, heat 2 tablespoons of vegetable oil over high heat until shimmering.
4. Sear the Beef: Add the marinated beef to the hot pan in a single layer. Let it sear for about 1-2 minutes before stirring. Cook until browned, then remove from the pan and set aside.
5. Sauté the Vegetables: In the same pan, add the minced garlic and grated ginger. Stir-fry for about 30 seconds until fragrant. Then, add the bell peppers, broccoli, and snap peas. Stir-fry for 3-4 minutes until just tender but still crisp.
6. Return the Beef: Add the beef back to the pan with the vegetables. Pour in the oyster sauce and sesame oil. Toss everything together until well mixed and heated through, approximately 2-3 minutes.
7. Taste and Adjust: Taste the stir fry and adjust seasoning if needed, adding more soy sauce or pepper as desired.
8. Serve Hot: Remove from heat and serve immediately over cooked rice or noodles, garnished with sesame seeds and chopped green onions if desired.

With these easy steps, your delicious Easy Beef Stir Fry will be ready in no time!