1 If there are two authors, the names of them both are mentioned. 2  If there are three or more authors, only the name of the first one is given (in foot-and endnotes) or all of them are listed (in bibliography). 3  If only the editor or compiler is known, mark his or her name with âed.â abbreviation.
Sear the rib roast (prime rib) for 15 minutes at the higher oven temperature (450 degrees F.), then turn the oven to the lower temperature (325 degrees F.) for the rest of the cooking time. Every 1/2 hour, baste the cut ends of the roast with the fat accumulated in the roasting pan. Do Not Cover the roast.esidual Heat or Carry-Over Cooking: Remember, the rib roast will continue to cook as it sets. The internal temperature will rise to 125 degrees F. to 130 degrees F. (medium rare) in approximately 15 to 20 minutes. If allowed to rest as long as an hour, the internal temperature will rise even higher.
Here's how you do it: 1  Cook the beef at 350F until its internal temperature reads 5-10 degrees below the desired doneness. 2  It'll take anywhere from 15 to 30 minutes per pound, depending on the shape of the roast, and how well done you like it. 3  Remove the roast from the oven, and let it stand for 20 minutes. This can take 4 to 8 hours depending on the size of the roast, and how cooked you like it. 2  Turn the heat up to 500F and cook it until it reaches 5 to 10 degrees below the desired doneness. 3  It shouldn't take much more than 10-15 minutes. 4  Remove the roast from the oven and let it stand about 20 minutes.