This is a favorite of ours ...
Allow roast to sit at room temperature for 1 hour
4 to 5 lb. prime rib roast
Salt and Pepper
Mc Cormick Au Ju Gravy Mix
Preheat oven to 450 degrees F. Fat side up in roasting pan season with salt and pepper. Place uncovered in a 450 degree oven for 20 minutes to seal in the juices.
Reduce oven to 325 degrees and continue to cook