Cook the roast for 15 minutes, then reduce the oven temperature to 325 degrees. Continue to cook the roast until your meat thermometer reads 120 degrees. Estimate about 15 minutes of cooking time per pound of prime rib. How long does it take to roast a 5 lb rib roast? Reduce the oven temperature to 325°F.
Prime Rib Cooking Times. These estimated roasting times are based on a minimum roast weight of 4 pounds (or 1.8 kg): Recommended cooking temperature is 325ºF. For Medium-Rare: Cook for 22 minutes per pound. Internal temperature on the meat thermometer should read 140ºF (or 60ºC) when the roast is removed from the oven. For Medium: Cook for ...
Then, remove the meat from the heat and let it rest for 5-10 minutes before carving. This will help to lock in the juices and ensure a delicious meal. Keep in mind that the meat will continue to cook after it is removedfrom the oven, so it is better to err on the side of caution. How do I know when the prime rib is done?
Prime rib, also known as standing rib roast, is one of the most expensive cuts of beef from the primal rib area. The whole prime rib comes with seven ribs that weigh around 15 to 18 pounds and can serve about 14 to 16 people. When it comes to serving size, a good rule of thumb is 1 lb per person or one rib for two people.