Spiced Beef Stir-Fry with Bell Peppers and Black Bean Sauce

By AislePrompt Editorial · Published 2026-06-10 · Updated 2026-06-10

A vibrant beef stir-fry bursting with bold spices, tender strips of beef, and crunchy bell peppers coated in a savory black bean sauce. 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 350 calories and feeds 3, 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.

Ingredients

• 12 oz thinly sliced flank steak
• 1 medium sliced into strips red bell pepper
• 1 medium sliced into strips green bell pepper
• 3 tbsp black bean sauce
• 1 tbsp soy sauce
• 1 tsp cornstarch
• 3 minced garlic cloves
• 1 tbsp minced ginger
• 2 tbsp vegetable oil
• 2 sliced diagonally scallions
• 1/4 cup water
• 1/4 tsp (optional) chili flakes

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Instructions

1. Step 1: Toss 12 oz thinly sliced flank steak with 1 tsp cornstarch and 1 tbsp soy sauce in a bowl until evenly coated; set aside.
2. Step 2: Heat 2 tbsp vegetable oil in a wok or large skillet over high heat until shimmering. Add 3 minced garlic cloves and 1 tbsp minced ginger, stir-fry for 30 seconds until fragrant but not browned.
3. Step 3: Add the marinated beef slices in a single layer and stir-fry for 2-3 minutes until the edges brown but center is slightly pink.
4. Step 4: Add 1 sliced red bell pepper and 1 sliced green bell pepper to the wok, stir-frying for 2 minutes until vegetables are crisp-tender.
5. Step 5: Stir in 3 tbsp black bean sauce and 1/4 cup water, tossing everything together. Cook for 1-2 minutes until the sauce thickens and coats the beef and peppers.
6. Step 6: Sprinkle 2 sliced scallions and 1/4 tsp chili flakes (if using) over the stir-fry, toss quickly, and remove from heat. Serve hot over steamed rice or noodles.