Roast Beef and Shallots with Creamy Horseradish Sauce

• Gluten free

• Meat

  • 1 Rump or rib roast, boneless

• Produce

  • 1/4 cup Flat leaf parsley, fresh
  • 1 1/2 lb Shallots, medium

• Condiments

  • 1/4 cup Horseradish, prepared
  • 2 tbsp Mustard, whole grain

• Baking & Spices

  • 1 Kosher salt
  • 1 Pepper
  • 3 tbsp Peppercorns, mixed

• Oils & Vinegars

  • 2 tbsp Olive oil

• Dairy

  • 3/4 cup Sour cream

Found on delish.com