Prime rib, reverse seared on time
Low and slow to 120-125°F, rest, then a hard sear. Set the roast weight and dinner time and get every step, the salting day included.
Setting your clock…
Prime rib (bone-in rib roast) cook times by temperature
Totals shown for a 8 lb prime rib (bone-in rib roast). Schedule on the long end; go by internal temperature.
| Pit temp | Rate | Cook time |
|---|---|---|
| 225°F | 30-35 min per lb | 4 h to 4 h 40 min |
| 250°F | 25-30 min per lb | 3 h 20 min to 4 h |
Done: 120-125°F for medium-rare, then sear. Rest 30 minutes.
Questions people ask
- How long does a 8 lb prime rib (bone-in rib roast) take at 225°F?
- Plan on 4 h to 4 h 40 min of cooking, then a 30 minute rest. Schedule on the long end: if it finishes early it holds for up to 1 hour wrapped in a dry cooler, but a late finish can't be fixed.
- When is prime rib (bone-in rib roast) done?
- When it's 120-125°F for medium-rare, then sear. The clock gets you close; the thermometer makes the call.
- When should I light the fire?
- Work backwards from dinner: carving (15 min), resting (30 min), the slow end of the cook, then preheat (20 minutes on a pellet grill). The planner above does that math for your exact weight and dinner time.
Guides for this cook
- Smoked prime rib stays even and juicy when temperature leads the cookSmoke prime rib at 225°F to 250°F, build a dark crust with a reverse sear, and use internal temperature instead of minutes per pound to protect an expensive roast.
- Meat thermometer for prime rib: hit 130°F every timeLearn exactly where to probe prime rib, what temps to pull at, and what thermometer features actually matter for a perfect roast.
- Tomahawk steak reverse sear: get it right every timeReverse sear a tomahawk steak at 225-250 F, pull at 115-120 F, then sear at 500-600 F for a perfect medium-rare crust.
- Reverse-seared steak timing: get it right every timeLearn the exact temps and timing for reverse-seared steak so you hit your target doneness and get a hard sear every single cook.
- Reverse sear steak temperature: nail doneness every timeLearn the exact temperatures for reverse searing steak, how to use a meat thermometer, and how to get a perfect crust without overcooking.