Italian Beef Stir-Fry with Peppers and Onions

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

A quick stir-fry featuring thin slices of Italian beef roast sautéed with colorful bell peppers and onions in a savory sauce, perfect for a weeknight meal. This american-inspired asian fusion ready in about 20 minutes pairs thinly sliced cooked Italian beef roast, medium yellow onion, sliced, garlic cloves, minced 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: 10 min Cook: 10 min Serves 4 American cuisine 320 cal/serving
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Ingredients

Instructions

  1. Step 1: Heat 2 tbsp olive oil in a large skillet or wok over medium-high heat until shimmering. Add 3 minced garlic cloves and sauté for 30 seconds until fragrant.
  2. Step 2: Add 1 sliced medium yellow onion, 1 sliced red bell pepper, and 1 sliced green bell pepper. Stir-fry for 4-5 minutes until vegetables are tender-crisp and slightly caramelized.
  3. Step 3: Add 12 oz thinly sliced cooked Italian beef roast to the skillet along with 3 tbsp soy sauce, 1/4 cup beef broth, 1/4 tsp red pepper flakes, and 1/4 tsp black pepper. Stir continuously and cook for 3 minutes until the beef is heated through and the sauce thickens slightly.
  4. Step 4: Remove from heat and sprinkle with 2 tbsp chopped fresh parsley. Serve immediately over rice or on its own.

Equipment for this recipe

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Frequently asked questions

How long does Italian Beef Stir-Fry with Peppers and Onions take to make?

Total time is about 20 minutes (10 min prep + 10 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 Italian Beef Stir-Fry with Peppers and Onions?

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 medium yellow onion, sliced from drying out.

Can I substitute ingredients in Italian Beef Stir-Fry with Peppers and Onions?

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 Italian Beef Stir-Fry with Peppers and Onions for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). 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 Italian Beef Stir-Fry with Peppers and Onions?

American asian fusion 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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