Spiced Beef Stir-Fry with Peanuts and Bell Peppers

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A vibrant stir-fry featuring tender beef strips, crunchy peanuts, and colorful bell peppers tossed in a savory-spicy sauce. This asian-inspired beef 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 430 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.

Prep: 15 min Cook: 15 min Serves 3 Asian cuisine 430 cal/serving
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Ingredients

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Instructions

  1. Step 1: Toss 12 oz thinly sliced flank steak with 3 tbsp soy sauce and 1 tbsp cornstarch in a bowl until evenly coated; set aside for 10 minutes.
  2. Step 2: Heat 2 tbsp vegetable oil in a large wok or skillet over high heat until shimmering. Add marinated beef and stir-fry for 2-3 minutes until browned but not fully cooked; remove beef from pan.
  3. Step 3: Add 1 sliced medium red bell pepper, 1 sliced medium green bell pepper, 3 minced garlic cloves, and 1 tbsp minced fresh ginger to the pan. Stir-fry for 3-4 minutes until vegetables are crisp-tender and fragrant.
  4. Step 4: Return beef to the pan along with 1/3 cup roasted peanuts, 2 tbsp hoisin sauce, 1 tsp sriracha, and 1 tsp sesame oil. Stir-fry for 2 minutes until beef is cooked through and sauce coats all ingredients.
  5. Step 5: Remove from heat and garnish with 2 sliced green onions. Serve immediately with steamed rice or noodles.

Frequently asked questions

How long does Spiced Beef Stir-Fry with Peanuts and Bell Peppers take to make?

Total time is about 30 minutes (15 min prep + 15 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Spiced Beef Stir-Fry with Peanuts and Bell Peppers?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep flank steak from drying out.

Can I substitute ingredients in Spiced Beef Stir-Fry with Peanuts and Bell Peppers?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Spiced Beef Stir-Fry with Peanuts and Bell Peppers for a different number of people?

The recipe is written for 3 servings. Multiply each ingredient by (your serving target / 3). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Spiced Beef Stir-Fry with Peanuts and Bell Peppers?

Asian beef like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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