This recipe is carried over from Foodnetwork.com, and is posted by Paula Deen (I love her). It is the easiest way to make a perfect Standing Prime Rib Roast. After a botched New Years Eve dinner one year, I decided to give this a try and have been using it ever since. This technique works no matter what size your roast may be. I've used the same time and temperature for a 2 lb (1 rib) roast and a 6 lb (4 rib) roast... and it always comes out perfectly. Enjoy! *Note: Cook time does not include the 3 hours that the oven is turned off.