Stir-Fried High-Heat Garlic Beef with Bell Peppers

By AislePrompt Editorial · Published 2026-04-26 · Updated 2026-04-26

Juicy strips of beef stir-fried over high heat with crisp bell peppers and a pungent garlic sauce, delivering bold flavor in minutes. This Chinese-inspired high-protein recipe, ready in about 20 minutes, pairs vegetable oil, garlic cloves, minced, soy sauce for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 320 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 flank steak, thinly sliced against the grain
• 2 tbsp vegetable oil
• 5 garlic cloves, minced
• 1 large red bell pepper, sliced into 1/4-inch strips
• 1 large yellow bell pepper, sliced into 1/4-inch strips
• 3 tbsp soy sauce
• 1 tbsp oyster sauce
• 1 tsp brown sugar
• 1/2 tsp black pepper
• 1 tsp cornstarch
• 2 tbsp water
• 2 stalks green onions, sliced

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Instructions

1. Step 1: In a small bowl, whisk together 3 tbsp soy sauce, 1 tbsp oyster sauce, 1 tsp brown sugar, 1/2 tsp black pepper, 1 tsp cornstarch, and 2 tbsp water; set aside.
2. Step 2: Heat 2 tbsp vegetable oil in a large wok or skillet over high heat until shimmering. Add 12 oz thinly sliced flank steak and stir-fry for 2-3 minutes until browned but still tender; remove beef from wok and set aside.
3. Step 3: In the same wok, add 5 minced garlic cloves and stir-fry for 30 seconds until fragrant but not burnt. Add 1 large sliced red bell pepper and 1 large sliced yellow bell pepper; stir-fry for 2 minutes until peppers are tender-crisp.
4. Step 4: Return the beef to the wok, pour the prepared sauce over, and stir-fry for 1-2 minutes until the sauce thickens and coats the beef and peppers evenly.
5. Step 5: Remove from heat and garnish with 2 sliced green onions before serving immediately with steamed rice or noodles.