Marinate the Beef

In a bowl, combine sliced beef with soy sauce, cornstarch, sesame oil, and black pepper.

Mix well and let it marinate for 15 minutes.

Prepare the Vegetables

Wash and chop all vegetables evenly for uniform cooking.

Separate harder vegetables (like carrots and broccoli) from softer ones (like onions and bell peppers).

Make the Stir Fry Sauce

In a small bowl, mix soy sauce, oyster sauce, brown sugar, sesame oil, cornstarch, and water.

Stir until smooth and set aside.

Cook the Beef

Heat a wok or large skillet over high heat.

Add 1 tbsp oil and sear the marinated beef in a single layer for about 2 minutes, stirring occasionally.

Remove and set aside.

Stir Fry the Vegetables

Add another tbsp of oil to the same pan.

Stir fry garlic and ginger for 30 seconds until fragrant.

Add broccoli and carrots first, stir fry for 1-2 minutes.

Add bell peppers, onions, and snow peas, cooking for another 2 minutes.

Combine Everything

Return the beef to the pan.

Pour in the prepared stir fry sauce and toss everything together.

Cook for 1-2 minutes until the sauce thickens and evenly coats the beef and vegetables.

Garnish & Serve

Remove from heat and sprinkle with sesame seeds and chopped scallions.

Serve hot over steamed rice, noodles, or a low-carb alternative.