For cooking instructions for prime rib roast that is boneless the basic cooking time is for medium is a 3 to 4 pound prime rib roast should be cooked at 350 degrees Fahrenheit for 23 to 30 minutes per pound, for a 4 to 6 pound prime rib roast you should cook it at 350 degrees Fahrenheit for 18 to 20 minutes per pound.
How do you calculate cooking time for prime rib? To calculate your cooking time, multiply the exact weight of the roast by 5. Round the resulting number to the nearest whole number. The rib is cooked at 500 degrees F for exactly that many minutes. For example, for a 6 pound roast: 6×5=30, so cooking time is 30 minutes.
prime rib roast with or without bone (any size) bottom round center cut Preheat oven to 550°F degrees. Make a rub of salt, pepper and garlic powder and apply to meat. Place meat in a shallow roasting pan fat side up. Roast at 550°F at 5 minutes per pound for RARE, or 6 minutes per pound for MEDIUM and 7 minutes per pound for WELL DONE.
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