Stir-Fried Sirloin with Aji Amarillo and French Fries

By AislePrompt Editorial · Published 2026-04-28 · Updated 2026-04-28

Tender sirloin strips quickly stir-fried with fiery aji amarillo, sweet tomatoes, red onions, and golden French fries for a vibrant Peruvian classic. This Latin American recipe, ready in about 25 minutes, pairs sirloin steak, vegetable oil, red onion for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 540 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, thinly sliced into strips sirloin steak
• 3 tbsp vegetable oil
• 1 large, sliced into thick wedges red onion
• 2 medium, cut into wedges tomatoes
• 1 tbsp aji amarillo paste
• 3 tbsp soy sauce
• 1 tbsp red wine vinegar
• 2 cups, cooked and hot French fries
• 2 tbsp, chopped fresh cilantro
• to taste salt
• to taste black pepper
• 2 cups, for serving cooked white rice

The wok we’d stir-fry this in → Best Woks for 2026: Carbon Steel, Nonstick & Flat-Bottom Picks + Buying Guide

Instructions

1. Step 1: Heat 2 tbsp vegetable oil in a large cast-iron or heavy skillet over high heat until shimmering. Add 12 oz thinly sliced sirloin steak and sear for 2 minutes without stirring, then toss and cook another 1 minute until nicely browned but still juicy. Remove beef and set aside.
2. Step 2: In the same skillet, add 1 tbsp vegetable oil and 1 large sliced red onion. Stir-fry over medium-high heat for 2 minutes until edges begin to char and soften.
3. Step 3: Add 2 medium tomato wedges and 1 tbsp aji amarillo paste to the onions. Stir and cook for 1 minute until tomatoes soften but retain shape.
4. Step 4: Return the beef to the pan, then pour in 3 tbsp soy sauce and 1 tbsp red wine vinegar. Stir everything together and cook for 1 minute until the sauce slightly thickens and coats the beef and vegetables.
5. Step 5: Gently fold in 2 cups hot French fries and 2 tbsp chopped fresh cilantro. Toss carefully to combine and heat through for 1 minute. Season with salt and black pepper to taste.
6. Step 6: Serve immediately with 2 cups cooked white rice on the side for a classic Peruvian meal.