Stir-Fried Beef with Bell Peppers and Garlic

By AislePrompt Editorial · Published 2026-05-17 · Updated 2026-05-17

How this recipe was made — this recipe was drafted by AislePrompt's AI-assisted pipeline from technique templates and USDA-sourced nutrition data, and published by AislePrompt Editorial — see how AislePrompt recipes are developed and reviewed.

Juicy strips of beef stir-fried with colorful bell peppers and a savory garlic sauce, perfect for a quick and satisfying weeknight meal. This Chinese-inspired beef recipe, ready in about 25 minutes, pairs flank steak, red bell pepper, green bell pepper for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 320 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 15 min Cook: 10 min Serves 4 Chinese cuisine 320 cal/serving

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Ingredients

1 lb, thinly sliced against the grain flank steak
1 medium, sliced into thin strips red bell pepper
1 medium, sliced into thin strips green bell pepper
4 cloves, minced garlic
3 tbsp soy sauce
2 tbsp oyster sauce
2 tbsp vegetable oil
1 tsp cornstarch
1/4 cup water
1/2 tsp black pepper

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Instructions

Step 1: Toss 1 lb thinly sliced flank steak with 1 tsp cornstarch and 1 tbsp soy sauce in a bowl until evenly coated.
Step 2: Heat 2 tbsp vegetable oil in a wok or large skillet over high heat until hot but not smoking. Add 4 minced garlic cloves and sauté for 30 seconds until fragrant.
Step 3: Add the marinated beef strips and stir-fry for 3-4 minutes until browned but still tender.
Step 4: Add 1 sliced red bell pepper and 1 sliced green bell pepper to the wok, stir-frying for another 2 minutes until slightly softened but still crisp.
Step 5: Mix 2 tbsp oyster sauce, 2 tbsp soy sauce, 1/4 cup water, and 1/2 tsp black pepper in a small bowl, then pour over the beef and peppers. Stir-fry for 1-2 minutes until the sauce thickens and coats the ingredients evenly. Serve hot.