Beef Tenderloin with Horseradish Sauce

Beef Tenderloin with Horseradish Sauce

Ingredients

  1. 1 trimmed beef tenderloin roast (4 to 4 1/2 lb.), tied
  2. 2 tbsp. neutral-flavor oil (such as grapeseed)
  3. Kosher salt
  4. Coarsely ground black pepper
  5. 16 large fresh thyme sprigs
  6. 1 cup sour cream
  7. 1/3 cup prepared horseradish cream
  8. 1/4 cup heavy cream
  9. 2 tbsp. chopped fresh oregano
  10. 1 tbsp. fresh lemon juice

Preparation

  • Position the racks in the upper and lower thirds of the oven; preheat to 450°. Place the roast on a foil-lined baking sheet. Rub with the oil; season generously with the salt and pepper. Arrange half of the thyme sprigs under the roast and tuck the remaining sprigs under the twine all over the roast. 
  • Roast on the lower rack until an instant-read thermometer inserted into the center registers 125° for medium-rare, 40 to 45 minutes. Let rest for 10 minutes.