A bold and savory stir-fry featuring tender beef, crisp bell peppers, and onions in a rich soy-black pepper sauce. Ready in 30 minutes and packed with flavor.
1 lb flank or sirloin steak, thinly sliced against the grain
1 red bell pepper, sliced
1 green bell pepper, sliced
1 medium onion, sliced into wedges
2 cloves garlic, minced
1 tsp fresh ginger, grated
2 tbsp soy sauce (plus 1 tbsp for marinade)
2 tbsp oyster sauce
1 tsp cornstarch (plus 1 tsp for sauce)
1 tsp sugar
¼ cup water or beef broth
1 tbsp vegetable oil
½ tsp sesame oil
Freshly ground black pepper to taste
Marinate beef with 1 tbsp soy sauce, 1 tsp oil, 1 tsp cornstarch, and black pepper. Let rest 15–30 minutes.
Mix sauce: combine 2 tbsp soy sauce, oyster sauce, water, 1 tsp cornstarch, sugar, and more black pepper.
Heat oil in wok or skillet. Sear beef 2–3 minutes. Remove and set aside.
Stir-fry garlic and ginger for 30 seconds. Add onions and bell peppers. Cook 3–4 minutes.
Return beef to pan. Add sauce and stir well. Cook 2–3 minutes until sauce thickens.
Drizzle with sesame oil and serve hot.
Serve with rice or noodles.
Add chili for heat or mushrooms for depth.
Store leftovers in the fridge up to 3 days.