If you have left out hyphens, Excel does include automatic cell formatting options, allowing you to uniformly add hyphens to a selection of phone numbers, social security numbers or anything else requiring the dash.
1 Allow roast to stand at room temperature for at least 1 hour. 2  Preheat the oven to 375 degrees F (190 degrees C). 3  Combine the salt, pepper and garlic powder in a small cup. 4  Place the roast on a rack in a roasting pan so that the fatty side is up and the rib side is on the bottom. 5  Rub the seasoning onto the roast. Preheat the oven to 375 degrees F (190 degrees C). 2  Combine the salt, pepper and garlic powder in a small cup. 3  Place the roast on a rack in a roasting pan so that the fatty side is up and the rib side is on the bottom. 4  Rub the seasoning onto the roast.
Quick Answer. To cook a prime rib roast, rub the roast with a mixture of spices and herbs, then roast in the oven until the meat reaches an internal temperature of at least 135 degrees Fahrenheit. This results in a medium rare roast that is red in the center. Continue Reading.