Spicy Garlic Stir-Fried Beef with Bell Peppers

By AislePrompt Editorial · Published 2026-05-23 · Updated 2026-05-23

Quick stir-fried tender beef strips with crisp bell peppers and a spicy garlic soy sauce that brings bold flavor to your dinner table. This Asian fusion recipe, ready in about 30 minutes, pairs flank steak, soy sauce, cornstarch for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 350 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.

Ingredients

• 1 lb flank steak
• 3 tbsp soy sauce
• 1 tbsp cornstarch
• 2 tbsp vegetable oil
• 1 large red bell pepper
• 1 large green bell pepper
• 1 medium yellow onion
• 4 garlic cloves
• 1 tbsp grated fresh ginger
• 1 tsp red chili flakes
• 1 tsp brown sugar
• 1 tsp sesame oil
• 2, sliced scallions

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Instructions

1. Step 1: Thinly slice 1 lb flank steak against the grain into 1/4-inch strips. In a bowl, toss the beef with 3 tbsp soy sauce and 1 tbsp cornstarch until evenly coated; set aside for 10 minutes.
2. Step 2: Slice 1 large red bell pepper, 1 large green bell pepper, and 1 medium yellow onion into thin strips. Mince 4 garlic cloves and grate 1 tbsp fresh ginger.
3. Step 3: Heat 2 tbsp vegetable oil in a large wok or skillet over high heat until shimmering. Add the marinated beef strips in a single layer and stir-fry for 2-3 minutes until just browned but not fully cooked. Remove beef and set aside.
4. Step 4: In the same wok, add the sliced bell peppers and onion. Stir-fry for 3-4 minutes until vegetables are crisp-tender.
5. Step 5: Add the minced garlic, grated ginger, 1 tsp red chili flakes, and 1 tsp brown sugar to the vegetables. Stir-fry for 30 seconds until aromatic.
6. Step 6: Return the beef to the wok along with 1 tsp sesame oil. Stir everything together and cook for another 2 minutes until the beef is cooked through and the sauce coats the ingredients.
7. Step 7: Garnish with 2 sliced scallions before serving hot over steamed rice or noodles.