Prime Rib Roast With Rosemary And Garlic - cooking recipe

Ingredients

5 lbs boneless rib-eye roast, leave at room temp. 2 hrs. before cooking
2 tablespoons olive oil
1 tablespoon salt
2 tablespoons ground black pepper
8 large garlic cloves, minced
2 tablespoons rosemary, minced
20 ounces baby portabella mushrooms, sliced (2 10-oz. packages)
1 cup chicken broth
3/4 cup red wine
1 tablespoon Dijon mustard
1 teaspoon cornstarch, dissolved in 2 tsp. water

Preparation

Heat oven to 250 degrees and heat a large skillet over medium-high heat. Rub roast on all sides with oil, salt & pepper. Add roast to hot skillet & brown on all sides, about 10 minutes. Transfer roast to a plate. When cool enough to handle, rub garlic & rosemary all over.
Meanwhile, pour off all but 2 T of the beef drippings. Add mushrooms & saute' until well browned, about 8 minutes. Mix broth, wine & mustard; add to mushrooms & simmer to blend flavors & reduce slightly, about 3 minutes. Pour mushroom sauce into a bowl & set aside.
Set a wire rack over the skillet, set roast on rack (or use a regular roasting pan with a V-rack). Slow roast in oven 2-1/2 to 3 hours until meat reaches an internal temp of 135 degrees for medium-rare or 140 degrees for medium.
Transfer roast to cutting board and remove rack from skillet. Pour off excess fat, if any. Set skillet over medium-high heat, return mushroom sauce to pan & heat to a simmer. Add cornstarch and simmer until sauce thickens slightly, about a minute. Carve meat & serve with the sauce.