Keto Seared Beef Steak with Herb Butter
A perfectly crisp-edged steak finished with a fragrant herb butter sauce, ideal for high-protein keto dinners that cook. This American-inspired beef recipe (keto, high-protein), ready in about 23 minutes, pairs top sirloin steak, avocado oil, unsalted butter for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 542 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 top sirloin steak
- 2 tbsp avocado oil
- 2 tbsp unsalted butter
- 1 tsp finely chopped fresh rosemary
- 1/2 tsp garlic powder
- 1/4 tsp sea salt
- 1/4 tsp black pepper
The instant-read thermometer we’d check this beef with → Best Instant-Read Thermometers for 2026: Fast, Accurate Picks Under $100
Affiliate disclosure: AislePrompt may earn a commission on qualifying purchases made through Amazon links, at no additional cost to you. See our policy →
Equipment for this recipe
Tools this recipe's steps call for, with a link to each on Amazon.
Instructions
- Step 1: Pat the 8 oz steak dry with paper towels, then season evenly with 1/4 tsp sea salt and 1/4 tsp black pepper on both sides.
- Step 2: Heat 2 tbsp avocado oil in a heavy skillet over medium-high heat until shimmering and just smoking, about 2 minutes.
- Step 3: Place the steak in the skillet, pressing lightly to ensure full contact; sear undisturbed for 3 minutes until a deep brown crust forms on the bottom.
- Step 4: Flip the steak, reduce heat to medium, and cook for 3 more minutes for medium-rare, or until the internal temperature reaches 125°F (use a meat thermometer).
- Step 5: Remove steak to a plate, tent loosely with foil, and let rest for 5 minutes. Meanwhile, melt 2 tbsp unsalted butter in the same skillet over low heat, stir in 1 tsp chopped rosemary and 1/2 tsp garlic powder, and simmer for 1 minute until fragrant.









