My favorite way to cook prime rib is the 500 degree method. You take the weight of the meat in pounds and multiply that by 5. Then you heat up the oven to 500 degrees and cook it at that temperature for the number you came up with (example, a 5 lb roast would be cooked for 25 minutes at 500). Once that time is up then you shut off the oven but don’t open the door. You then leave the roast in that oven for another two hours. This results in a medium rare prime rib every time (I have found that with different ovens you might have to adjust the cooking time slightly but once you figure that out it’s super easy) I love cooking it this way because it takes the guesswork out of when the roast will be done, so for big family gatherings you know exactly when dinner can be served. It also helps if you have two ovens because you’re going to need a separate oven to cook the roasted potatoes and whatever else you are serving with the prime rib. Now I’m hungry