Sautéed Beef and Bell Pepper Lettuce Wraps

By AislePrompt Editorial · Published 2026-07-24 · Updated 2026-07-24

Tender strips of beef quickly sautéed with colorful bell peppers and onion, wrapped in crisp lettuce leaves for a fresh, Whole30-friendly lunch. This Mexican-inspired beef recipe (whole30, gluten free), ready in about 30 minutes, pairs sirloin steak, red bell pepper, yellow 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 4, so it slots cleanly into a Whole30 week and pairs well with roasted sweet potato or a simple olive-oil salad. 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, thinly sliced into strips sirloin steak
• 1 medium, thinly sliced red bell pepper
• 1 medium, thinly sliced yellow bell pepper
• 1, thinly sliced small yellow onion
• 3 tbsp olive oil
• 1 tsp sea salt
• 1/2 tsp black pepper
• 8 large leaves romaine lettuce leaves
• 2 cloves minced garlic
• 1 tbsp fresh lime juice
• 2 tbsp chopped fresh cilantro

The pan we’d use for this → Best Nonstick Cookware for 2026: Top 5 Skillet Picks + Buying Guide

Instructions

1. Step 1: Heat 2 tbsp olive oil in a large skillet over medium-high heat. Add 1 lb thinly sliced sirloin steak seasoned with 1/2 tsp sea salt and 1/4 tsp black pepper. Sauté for 4-5 minutes until beef is browned and cooked through. Remove beef and set aside.
2. Step 2: Add remaining 1 tbsp olive oil to the skillet. Sauté 2 minced garlic cloves, 1 thinly sliced small yellow onion, and 2 thinly sliced medium bell peppers (1 red, 1 yellow) for 5-6 minutes until vegetables are tender-crisp and fragrant. Season with remaining 1/2 tsp sea salt and 1/4 tsp black pepper.
3. Step 3: Return cooked beef to the skillet and toss with sautéed vegetables. Stir in 1 tbsp fresh lime juice and 2 tbsp chopped fresh cilantro.
4. Step 4: Spoon beef and vegetable mixture into 8 large romaine lettuce leaves. Serve immediately as handheld wraps.