Reverse-Sear Prime Rib
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The year we guessed and the roast came out gray, nobody said a word, and everybody remembers. A probe thermometer, a low oven and a hot finish give you pink from edge to edge, under a crust that crackles.
The short version
Salt the roast 1 to 3 days ahead, roast it at 250°F until the center hits 120°F (about 3 hours), rest it 45 minutes, then brown it in a 500°F oven for 8 to 10 minutes and carve. A probe thermometer is the one tool you can't skip.
What makes ours better
why ours wins the argument at dinner
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Dry-brine it for 1 to 3 days. Salt rubbed on and left uncovered in the fridge seasons the meat all the way through and dries the surface, so the crust browns fast.
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Roast low, then sear at the end. A 250°F oven cooks the roast gently and evenly, with no gray band under the crust. Searing last also means it comes out of the oven hot and crisp as you carve.
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Rest it before the sear, not after. The long rest lets the juices settle while the oven heats to 500°F. The short, hot finish crisps the outside without cooking the center further.
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Rub with herb butter. Butter and herbs on the fat cap brown beautifully and smell like a steakhouse. Garlic is left out on purpose because it burns in the sear.
What you need
the stars of the show
- Bone-in prime rib roast6½ pounds
- Unsalted butter4 tablespoons
- Chopped fresh rosemary1 tablespoon
- Fresh thyme leaves1 tablespoon
The roast
Herb butter
yes, all of the butter
Steps
apron on. phone down. mostly.
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Dry-brine the roast
One to three days ahead, pat the roast dry and rub the salt over every surface, including between the bones and the ends. Set it on a rack in a rimmed baking sheet and refrigerate it uncovered. The surface will look dry and dark, which is what you want.
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Warm up and butter
Take the roast out of the fridge 2 hours before cooking. Mix the butter, rosemary, thyme and pepper, and rub it over the fat cap and sides. Set the roast fat side up on a rack in a roasting pan. Heat the oven to 250°F with a rack in the lower third.
About 120 min. Cook mode has a timer for this step.
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Probe the roast
Push an oven-safe probe thermometer into the center of the meat, parallel to the bones and not touching one. Set the alarm for 120°F.
A thermometer is the only reliable guide. Roasts vary and so do ovens.
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Roast low and slow
Roast, without opening the door, until the center reads 120°F for medium-rare. Expect 2½ to 3½ hours for a roast this size, or about 30 minutes per pound. For rare pull at 115°F, for medium at 125°F.
About 180 min. Cook mode has a timer for this step.
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Rest the roast
Move the roast to a cutting board and leave it uncovered for 30 to 60 minutes. The temperature will rise a few degrees. Heat the oven to 500°F for the last 20 minutes of the rest.
Don't tent it with foil. Trapped steam makes the crust soft.
About 45 min. Cook mode has a timer for this step.
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Sear in the hot oven
Return the roast to the oven and roast for 5 to 10 minutes, until the fat cap is deeply browned and crackling. Check after 5 minutes. It will smoke a little, so turn on the fan.
About 8 min. Cook mode has a timer for this step.
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Carve and serve
Cut the bones off in one piece, slicing along their curve. Slice the roast into ¾-inch slices against the grain. Serve right away, with the bones for anyone who wants them.
Good to know
read this before somebody asks for seconds
- Plan on about 1 pound per person for bone-in. Ask for the first-cut or loin end, which is the leaner, more tender side.
- The doneness temperatures are the oven pull temperatures. Final temperatures after resting and searing are about 10 degrees higher.
- For a smaller 2-rib roast, use 4 to 5 pounds and start checking the temperature at 2 hours.
- Save the bones. Gnaw on them at the table or use them for stock.
- Storage. Refrigerate sliced beef, wrapped tightly, for 4 days. Reheat slices in a covered 300°F oven with a splash of broth. Freeze for 2 months.
Questions, answered
asked and answered at the kitchen counter
What temperature should prime rib be?
Pull it from the 250°F oven at 120°F for medium-rare, 115°F for rare or 125°F for medium. It rises about 10 degrees after the rest and the final sear.
How long does prime rib take per pound?
About 30 minutes per pound at 250°F, but use the thermometer, not the clock. Check early.
Do I have to dry-brine it for days?
Overnight is good and 2 to 3 days is better. In a pinch, salt it 2 hours ahead and leave it at room temperature. The crust will be a little less crisp.
Can I make prime rib boneless?
Yes, ask for a boneless rib roast. It cooks a little faster, so start checking 30 minutes sooner, though bone-in tends to stay juicier.
How do I reheat leftover prime rib without drying it out?
Lay slices in a baking dish with a splash of beef broth, cover tightly with foil and warm at 300°F for 10 to 15 minutes. Skip the microwave.
Should I cover the roast while it rests?
No. Leave it uncovered so the crust stays crisp. It holds its heat for the full hour.
From the table
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Published October 28, 2026.