1 beef prime rib roast (5 lb.), 2 to 3 ribs
1/2 tsp. coarse black pepper, divided
1/4 tsp. kosher salt
2 Tbsp. butter
2 cups mixed sliced fresh mushrooms (baby bella, shiitake, oyster)
2 Tbsp. flour
2 Tbsp. GREY POUPON Dijon Mustard
1/4 tsp. dried thyme leaves
1/4 tsp. ground sage
1-1/2 cups fat-free reduced-sodium beef broth
1/4 cup Marsala wine
Heat oven to 325ºF.
Place meat in shallow pan; sprinkle with 1/4 tsp. pepper and salt. Bake 2 to 2-1/2 hours or until internal temperature of meat reaches 145ºF. Let stand 10 min. (Temperature will rise to 160ºF).
Meanwhile, melt butter in medium saucepan on medium heat. Add mushrooms; cook and stir 3 min. Stir in flour, mustard, herbs and remaining pepper. Gradually stir in broth and wine; cook and stir on medium heat 4 min. or until thickened.
Serve meat with sauce.