In a bowl combine butter, garlic, onion, bouillon, salt, paprika, and pepper. Mix well.
Place your roast rib side down (fat side up) on a foil lined roasting pan. Remove any strings. Rub seasoned butter all over.
For a roast that is rare in the center and slightly pink toward the outside, roast your prime rib uncovered at 500 degrees for 5 minutes per pound of meat, plus 5 more minutes. Add time as desired for a more well cooked roast.
Then turn the oven off and leave the roast for two hours. DO NOT OPEN THE OVEN.
Garnish with fresh chopped parsley.
Calories are automatically generated. For best results calculate based on your exact ingredients. At the grocery store a prime rib roast will often be called a Standing Rib Roast or a Beef Bone-in Roast. If you have difficulty locating the roast, just ask the butcher to point it out.