Keto Herb-Crusted Beef Tenderloin with Garlic-Butter Sauce
A succulent beef tenderloin coated in aromatic herbs, seared to perfection with a rich garlic-herb butter sauce that melts into the meat. This beef-inspired beef (keto, high protein) ready in about 45 minutes blends grass-fed beef tenderloin, avocado oil, minced garlic cloves into a versatile sauce that lifts everything from grain bowls and roasted vegetables to grilled proteins — a small-batch staple worth keeping in the fridge. Each serving lands at about 580 calories and feeds 4, so a small batch covers several meals across the week without taking over the fridge. 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
- 1.5 lbs grass-fed beef tenderloin
- 2 tbsp avocado oil
- 4, minced garlic cloves
- 1 tbsp, finely chopped fresh rosemary
- 1 tbsp, finely chopped fresh thyme
- 3 tbsp unsalted butter
- 1 tsp sea salt
- 1/2 tsp black pepper
Instructions
- Step 1: Pat 1.5 lbs grass-fed beef tenderloin dry with paper towels, then season evenly with 1 tsp sea salt and 1/2 tsp black pepper. Press 1 tbsp fresh rosemary and 1 tbsp fresh thyme firmly onto all sides of the beef.
- Step 2: Heat 2 tbsp avocado oil in a heavy oven-safe skillet over medium-high heat until shimmering (about 1 minute). Sear the seasoned beef for 2 minutes per side until deeply browned, then transfer the skillet to a preheated 400°F (200°C) oven and roast for 12-14 minutes until the internal temperature reaches 125°F (52°C) for medium-rare.
- Step 3: Remove the skillet from the oven, transfer the beef to a cutting board, and tent loosely with foil to rest for 10 minutes. While resting, melt 3 tbsp unsalted butter in the skillet over medium heat, add 4 minced garlic cloves, and cook for 1 minute until fragrant and golden, stirring constantly to prevent burning.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does Keto Herb-Crusted Beef Tenderloin with Garlic-Butter Sauce take to make?
Total time is about 45 minutes (20 min prep + 25 min cook). A small batch typically covers several meals in the week — store as the recipe directs.
How do I store leftover Keto Herb-Crusted Beef Tenderloin with Garlic-Butter Sauce?
Transfer to an airtight jar and refrigerate for up to 5–7 days. Most sauces freeze well for up to 2 months — portion into small containers or freezer bags so you can thaw only what you need. Stir before serving; cream- or yogurt-based sauces may separate on standing.
Can I substitute ingredients in Keto Herb-Crusted Beef Tenderloin with Garlic-Butter Sauce?
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 Keto Herb-Crusted Beef Tenderloin with Garlic-Butter Sauce for a different number of people?
The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). 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 Keto Herb-Crusted Beef Tenderloin with Garlic-Butter Sauce keto?
Yes — this recipe is tagged keto, high protein based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.
What others are saying
- ★★★★★
Added some red pepper flakes for heat — highly recommend.
- ★★★★★
Used half the salt and it was still plenty flavorful.
- ★★★★☆
Very good for a 25-minute recipe. Would bump up the spice level though.
