standing rib roast with 2 sauces

How To Make standing rib roast with 2 sauces

• 1

  Preheat oven to 350 degrees F. Place meat, fat side up, in roasting pan. Press peppercorns & 2 tsp thyme onto surface of meat. Bake 2 - 2 1/4 hours or until 135 degrees F. Meanwhile, make sauces - see steps 4 & 5.
• 2

  Insert probe of instant read thermometer 2 - 2 1/2" into thickest part of meat to check for doneness.
• 3

  Remove meat from oven. Cover meat with foil; let stand 15 - 20 minutes or until medium-rare doneness (145 degrees F).
• 4

  SAUCE 1: Mix sour cream, horseradish & sugar in serving bowl. Refrigerate until needed. CAN MAKE THE DAY BEFORE, SO FLAVORS MARRY TOGETHER.
• 5

  SAUCE 2: Melt butter in large skillet on medium heat. Add onions; cook & stir 8 - 10 minutes or until golden brown. Add mushrooms; cook & stir 6 minutes or until tender. Sprinkle with flour; cook & stir 1 minute. Stir in broth; simmer 5 minutes or until thickened, stirring constantly. Remove from heat; stir in mustard & remaining thyme.
• 6

  Slice meat. Serve with sauces.
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