Pan-Seared Beef Tenderloin with Mushroom Sauce
Tender beef tenderloin seared to medium-rare and topped with a savory mushroom sauce made with garlic, thyme, and a splash of beef broth. This american-inspired keto ready in about 27 minutes blends trimmed beef tenderloin, olive oil, unsalted butter 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 420 calories and feeds 2, 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 lb, trimmed beef tenderloin
- 2 tbsp olive oil
- 2 tbsp unsalted butter
- 8 oz, sliced cremini mushrooms
- 2 cloves, minced garlic
- 1 tbsp, chopped fresh thyme
- 1/2 cup, low sodium beef broth
- 1/2 tsp salt
- 1/4 tsp black pepper
Instructions
- Step 1: Season the beef tenderloin with 1/2 tsp salt and 1/4 tsp black pepper.
- Step 2: Heat 2 tbsp olive oil in a large skillet over medium-high heat until shimmering, then sear the beef for 3 minutes per side until golden brown.
- Step 3: Reduce heat to medium, add 2 tbsp unsalted butter, 8 oz sliced cremini mushrooms, and 2 minced garlic cloves; cook for 5 minutes until mushrooms are tender and golden.
- Step 4: Add 1 tbsp chopped fresh thyme and 1/2 cup beef broth, stirring to deglaze the pan; cook for 3 minutes until sauce thickens slightly.
- Step 5: Slice the beef and serve with the mushroom sauce.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does Pan-Seared Beef Tenderloin with Mushroom Sauce take to make?
Total time is about 27 minutes (15 min prep + 12 min cook). A small batch typically covers several meals in the week — store as the recipe directs.
How do I store leftover Pan-Seared Beef Tenderloin with Mushroom 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 Pan-Seared Beef Tenderloin with Mushroom 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 Pan-Seared Beef Tenderloin with Mushroom Sauce 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.
What goes well with Pan-Seared Beef Tenderloin with Mushroom Sauce?
American keto like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.
What others are saying
- ★★★★☆
Almost perfect — just needed a squeeze of lemon at the end.
- ★★★★☆
Enjoyable meal. Instructions could be a touch more detailed on the timing.
- ★★★★☆
My family liked it. I personally would prefer more depth of flavor.
