Herb-Crusted Beef Tenderloin with Creamy Mustard Sauce

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

Succulent beef tenderloin coated in a fragrant herb crust and served with a velvety mustard cream sauce that enhances the meat's rich flavor. This american-inspired beef (low carb) ready in about 50 minutes blends Beef tenderloin, trimmed, Fresh thyme leaves, Fresh rosemary, finely chopped 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.

★ 3.8 (9 ratings) Prep: 20 min Cook: 30 min Serves 4 American cuisine 580 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 400°F (200°C). Pat the beef tenderloin dry with paper towels, then rub with 3 tbsp olive oil and season evenly with 1 tsp salt and 1/2 tsp black pepper.
  2. Step 2: In a small bowl, combine 2 tbsp fresh thyme, 2 tbsp fresh rosemary, 4 minced garlic cloves, and 2 tbsp Dijon mustard. Press this mixture firmly over the entire surface of the beef tenderloin.
  3. Step 3: Place the beef on a rack in a roasting pan and roast for 20-25 minutes until the internal temperature reaches 125°F (52°C) for medium-rare.
  4. Step 4: While the beef rests, melt 2 tbsp butter in a small saucepan over medium heat. Add 1/4 cup heavy cream and 1 tbsp Dijon mustard, then simmer gently for 3-4 minutes until the sauce thickens and coats the back of a spoon.
  5. Step 5: Remove the beef from the oven, tent loosely with foil, and let rest for 10 minutes. Slice and serve immediately with the warm mustard cream sauce.

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Frequently asked questions

How long does Herb-Crusted Beef Tenderloin with Creamy Mustard Sauce take to make?

Total time is about 50 minutes (20 min prep + 30 min cook). A small batch typically covers several meals in the week — store as the recipe directs.

How do I store leftover Herb-Crusted Beef Tenderloin with Creamy Mustard 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 Herb-Crusted Beef Tenderloin with Creamy Mustard 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 Herb-Crusted Beef Tenderloin with Creamy Mustard 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 Herb-Crusted Beef Tenderloin with Creamy Mustard Sauce low carb?

Yes — this recipe is tagged low carb based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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