Herb-Crusted Beef Sirloin with Garlic-Infused Butter
A quick, high-protein beef dish with aromatic herbs and rich garlic butter, perfect for keto meal prep. This american-inspired beef (high-protein, low-carb) ready in about 25 minutes pairs flank steak, avocado oil, minced garlic cloves for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 485 calories and feeds 2, 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
- 8 oz flank steak
- 2 tbsp avocado oil
- 3, minced garlic cloves
- 2 tbsp, finely chopped fresh rosemary
- 1/4 cup unsalted butter
- 1 tsp kosher salt
- 1/2 tsp black pepper
Instructions
- Step 1: Pat 8 oz flank steak dry with paper towels, then season evenly with 1 tsp kosher salt and 1/2 tsp black pepper on both sides.
- Step 2: Heat 2 tbsp avocado oil in a cast-iron skillet over medium-high heat until shimmering, then add the seasoned steak and sear for 3 minutes per side until golden brown and crispy edges form.
- Step 3: Reduce heat to medium, add 3 minced garlic cloves and 2 tbsp fresh rosemary, cooking for 1 minute until fragrant and garlic turns golden but not brown.
- Step 4: Add 1/4 cup unsalted butter to the skillet, swirling to melt, and continue cooking for 2 more minutes while basting the steak with the garlic butter until the butter is foamy and the steak reaches 130°F for medium-rare.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does Herb-Crusted Beef Sirloin with Garlic-Infused Butter take to make?
Total time is about 25 minutes (15 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 Herb-Crusted Beef Sirloin with Garlic-Infused Butter?
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 flank steak from drying out.
Can I substitute ingredients in Herb-Crusted Beef Sirloin with Garlic-Infused Butter?
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 Herb-Crusted Beef Sirloin with Garlic-Infused Butter for a different number of people?
The recipe is written for 2 servings. Multiply each ingredient by (your serving target / 2). 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.
Is Herb-Crusted Beef Sirloin with Garlic-Infused Butter high-protein?
Yes — this recipe is tagged high-protein, low-carb based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.
What others are saying
- ★★★★★
The aroma while cooking this was absolutely heavenly.
- ★★★★☆
My family liked it. I personally would prefer more depth of flavor.
- ★★★★☆
Almost perfect — just needed a squeeze of lemon at the end.
