Savory stir-fried beef tossed with bell peppers, onions, and a rich soy-based sauce. Perfect for weeknights or meal prep.
1 lb flank or sirloin steak, thinly sliced
2 tbsp soy sauce (divided)
1 tbsp oyster sauce
1 tsp cornstarch (for marinade)
1 tsp cornstarch (for sauce)
1/2 tsp sugar
1/4 cup water
2 tbsp vegetable oil
1 red bell pepper, sliced
1 green bell pepper, sliced
1 yellow onion, sliced
2 garlic cloves, minced
1 tsp grated ginger
1 tsp sesame oil
Cracked black pepper, to taste
Marinate beef with 1 tbsp soy sauce, 1 tsp cornstarch, and a drizzle of sesame oil. Let sit 15–20 minutes.
Mix sauce ingredients: 1 tbsp soy sauce, 1 tbsp oyster sauce, 1/2 tsp sugar, 1 tsp cornstarch, 1/4 cup water. Set aside.
Heat 1 tbsp oil in skillet. Sear beef in batches until browned. Remove and set aside.
Add more oil, sauté garlic and ginger 30 seconds.
Add onion, stir-fry 1–2 minutes. Add bell peppers and stir-fry 2–3 more minutes.
Return beef to pan. Pour in sauce. Stir and cook 1–2 minutes until sauce thickens.
Finish with sesame oil and cracked black pepper. Serve hot.
Use a mix of pepper colors for visual appeal. For extra heat, add chili flakes or hot sauce. Keeps well for 4 days in the fridge.