Bone In Prime Rib Roast Recipe (2024)

FAQs

How many hours does it take to cook a bone-in prime rib? ›

Cook until a thermometer inserted into the thickest part of the prime rib registers 130 degrees F for medium rare, 35 to 45 minutes of cooking time per pound. An 8-pound roast will take about 5 1/2 to 6 hours.

Plan to have one pound of bone-in prime rib per person, or one rib for every two diners. If you're ordering from a butcher, you can either request by pound or number of ribs. To order by pound, ask for an eight-pound prime rib for eight people, or a 10-pound cut for 10 people.

Cook Time and Temperature:

Start by cooking your prime rib at 500°F for 15 minutes and then lower the oven temperature to 325° F and cook for 10-12 min per pound for rare, or 13-14 min per pound for medium rare, or 14-15 min per pound for medium well. A meat thermometer is essential to ensure you cook it perfectly!

Butchery: Both rib roast and prime are primal cuts of beef; however, prime rib recipes call for the cut to remain whole, whereas a butcher typically divides a rib roast into individual ribeye steaks. The rib roast is generally a boneless cut of meat, while prime rib comes with the bone still in it.

Brown the roast at 500°F (or as high as your oven will go) for 15 minutes. Lower the oven to 325°F to finish roasting: Reduce the oven temperature to 325°F. Roast in the oven until the thermometer registers 115°F for rare or 120° for medium rare, and 130°F for medium.

Do you cover prime rib roast when cooking? You can cover rib roast when cooking after searing it to help it retain some of its moisture, but it's not necessary. For the best results, leave the roast uncovered until you remove it from the oven or grill and place it at room temperature for resting.

Bone-In Prime Rib, accounting for approximately 35 minutes per pound for a rare degree of doneness and 40 minutes per pound for a medium degree of doneness. Account for an additional 15 minutes for high heat searing after smoking and 30 minutes to rest the Rib Roast after smoking and searing.

Overcooking the Prime Rib

That's why prime rib is so expensive: it's a huge piece of extremely good beef. Therefore, it's important not to cook it beyond medium-rare. Going past that temperature means the roast will no longer be tender.

How do restaurants make prime rib so tender? The secret to restaurant-style prime rib is cooking the meat super slow at low temperatures. I recommend cooking prime rib at no higher than 200 degrees F. This cooks the meat very slowly, turning the fat into butter and rendering the proteins juicy and soft.

How long to cook a 7lb prime rib at 325? ›

*Meat internal temp will continue to rise 5-10 degrees even after it's out of the oven so don't over-bake. This 7 lb roast was baked at 500˚F for 15 minutes then at 325˚F for 1 hr 30 minutes for medium doneness.

We highly recommend bone-in rib roast as it renders a more succulent, juicy flavor. When you place the roast fat side up in the pan, the rib bones also serve as a roasting rack, so the meat doesn't touch the bottom of the pan while it's cooking.

Since the loin end of a standing rib roast is more tender than the rest, prime rib is generally considered to be the best cut all around, but the front section of a rib roast has the advantage of more fat.

Buying Bone-in or Boneless

I prefer to purchase prime rib with the bones still attached. While I do cut the bones off, I've found that bone-in rib roasts have more real-estate and are less trimmed down. I like this, because I get more control over prepping my roast.

Bones have a higher thermal resistance than meat, meaning the meat around the bones will cook slower than the rest of the roast, leaving those sections extra-tender and juicy. To make carving easier, you can remove the bones from the raw beef and tie them back on if you'd like. (Ask your butcher to do this for you.)

APPROXIMATE COOKING TIMES for the prime rib cooked at 350°F after the 20 minute cooking time at 450°F. Rare; cook 12-13 minutes per pound or to 130°F. Medium-rare; cook 14-16 minutes per pound or to 140°F (I would not recommend cooking a prime rib any more than medium-rare).

For a medium-rare 5 lb Prime Rib Roast, roast for 1½–2 hours until a meat thermometer inserted in the thickest part of the roast registers 125°F.