Crispy Herb-Crusted Beef Sirloin with Avocado Cream

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

Savor the rich, herb-infused crust on tender beef sirloin paired with a creamy avocado sauce, perfect for high-protein keto meals. This American-inspired keto recipe (high protein, low carb), ready in about 23 minutes, pairs beef sirloin, avocado oil, fresh rosemary for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 580 calories and feeds 1, so it slots cleanly into a low-carb week and pairs well with cauliflower rice or roasted green vegetables. 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

• 8 oz beef sirloin
• 2 tbsp avocado oil
• 1 tsp finely chopped fresh rosemary
• 1/2 tsp garlic powder
• 1/4 tsp coarse sea salt
• 1/8 tsp freshly ground black pepper
• 1/2 medium avocado
• 1 tbsp heavy cream
• 1/2 tsp lime juice

The cast-iron skillet we’d sear this in → Best Cast Iron Skillets for 2026: Top Picks + Buying Guide

Instructions

1. Step 1: Pat the 8 oz beef sirloin dry with paper towels, then season evenly with 1/4 tsp coarse sea salt, 1/8 tsp black pepper, 1/2 tsp garlic powder, and 1 tsp chopped rosemary.
2. Step 2: Heat 2 tbsp avocado oil in a cast-iron skillet over high heat until shimmering. Add the seasoned beef and sear undisturbed for 2 minutes until a deep golden-brown crust forms on the bottom.
3. Step 3: Flip the beef and sear the other side for 2 minutes for medium-rare; remove from pan and rest on a cutting board for 5 minutes.
4. Step 4: While the beef rests, mash the 1/2 medium avocado with 1 tbsp heavy cream and 1/2 tsp lime juice until smooth and creamy, scraping the bowl to ensure no lumps remain.