Oven roasting a whole filet of beef is an impressive, easy and delicious way to serve a crowd during the holiday season. The whole beef tenderloin is spread with soft butter, crusted with cracked rainbow peppercorns, and then baked until your desired doneness. A smooth, creamy and savory roasted garlic sauce is the perfect pair for the tenderloin while serving!

Beef Tenderloin with Roasted Garlic Sauce

Prep Time: 15 minutes

Cook Time: 50 minutes

Total Time: 1 hour, 5 minutes

Yield: 12 servings

Serving Size: about 4 ounces

Ingredients

  • 1 whole trimmed beef tenderloin (4 1/2 to 5 1/2 pounds)
  • 3 heads garlic
  • 8 tablespoons (1 stick) unsalted butter, divided
  • 2 tablespoons mixed or black peppercorns
  • 1 tablespoon kosher salt
  • 1 teaspoon dry mustard powder
  • 1/2 teaspoon dry thyme
  • 1/2 teaspoon garlic powder
  • 1 1/3 cup beef stock
  • 2/3 cup heavy cream
  • 3 tablespoons all purpose flour
  • 1/2 teaspoon kosher salt, divided
  • 1/4 teaspoon dry mustard powder
  • 1/4 teaspoon Worcestershire sauce
  • pinch cayenne pepper

Directions

Preheat oven to 375°F. Remove beef from refrigerator and place on wire rack over baking sheet. The meat will come to room temperature while garlic roasts. Carefully remove top 1/4 of garlic bulbs with sharp knife. Part of each garlic clove should be exposed. Place 1 tablespoon butter on top of cut end of each bulb. Sprinkle butter covered bulbs with 1/4 teaspoon of kosher salt. Wrap each bulb in foil. Place wrapped garlic bulbs on top of baking sheet. Bake garlic for 1 hour. Remove garlic from oven and let cool on pan.

Raise oven temperature to 450°F. Place peppercorns, salt, mustard, thyme and garlic powder in base of mortar and pestle or spice grinder. Mix until peppercorns are broken and coarse ground. Spread all sides of beef with 2 tablespoons soft butter. Coat buttered tenderloin with spice mix. Remove beef from wire rack and place on baking sheet. Insert meat thermometer into thickest part of tenderloin. Bake tenderloin until it has reached your desired degree of doneness (125°F for rare, 135°F for medium rare, 150°F for medium), about 40-60 minutes. Remove tenderloin from the oven and let rest for 15 minutes on baking sheet.

While meat rests, prepare garlic sauce. Gently squeeze each clove of garlic from its skin and place into small bowl. With spoon, stir roasted garlic cloves until smooth paste forms. Set bowl aside. In medium saucepan, add remaining 3 tablespoons butter and melt over medium heat. Add flour and stir into melted butter. Cook mixture, over medium heat, stirring constantly, for 2 1/2 minutes. Add beef stock to butter and flour and whisk to blend. Add heavy cream and continue to whisk mixture until sauce begins to thicken, about 2 to 3 minutes. Add roasted garlic, 1/4 teaspoon kosher salt, mustard and cayenne pepper. Stir sauce until it is well blended. Remove sauce from heat.

Slice tenderloin and serve with warm garlic sauce.

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