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Prime Rib Cooking Times

An understanding of prime rib cooking times is essential to cooking the perfect prime rib roast.

These Prime Rib Roast cooking instructions will result in a perfect roast if you use a meat thermometer. Using a meat thermometer to measure the exact inside temperature of the roast is the ideal way to determine its doneness.

If you don't have a meat thermometer and can't get one, go by the cooking chart and it should be close. If you really want perfection though, get your hands on a meat thermometer.

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Prime Rib Cooking Times

These estimated roasting times are based on a minimum roast weight of 4 pounds (or 1.8 kg):

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 25 minutes per pound. Internal temperature should read 155ºF (or 68ºC) when roast is removed from the oven.

For Well Done: Cook 30 minutes per pound. The internal temperature should be 165ºF (or 74ºC) when removed from the oven.

The minutes per pound are a guideline only. Exact cooking time can vary, which is why it is best to use a meat thermometer. Allow 3 servings per pound of bone-in roast, 4 for a boned roast.

This amazing timer makes sure all of your roasts turn out perfectly. Display shows both "target" and "actual" temperatures, time elapsed and time remaining. An essential tool for good roasting.
Maverick Industries, Inc. Voice Alert Anticipation Roast Alert Thermometer

Tip:

For best results, the Beef Information Center recommends cooking your roast to medium-rare.

Turn any baking pan into a proper roast pan with this durable, nonstick roasting rack. It's great for chicken, beef, pork or turkey.
Norpro 13x10 Nonstick Roasting Rack