How Do You Make 20-Pound Prime Rib Roast?
Prime rib roasts are excellent to serve at dinner parties because they are easy to prepare and cook. They also go well with a lot of different types of vegetables. If you are having between 75 and 80 guests at your dinner party, you will need to make a 20-pound prime rib roast. Cut the 20 lb. prime rib roast into four 5 lb. roasts. You cannot cook a 20 lb. roast in one big lump because you cannot control the internal temperature of a roast that big. Set the roasts on a plate and allow them to reach room temperature. This should take about 2 hours. Combine salt, pepper, oregano and garlic powder in a small mixing bowl. Rub the mixture from Step 2 all over the 4 roasts. There is enough rub to use on all 4. If it is easier, you can separate the spices into 4 equal piles before mixing. Place each roast in a roasting pan. You can use the aluminum roasting pans that are sold at the dollar store. Heat your oven up to 350 degrees F. Then, place the roasts into the oven and cook for 45 minutes.
