1 cooking method with times, temperatures, and tips. Safe to 145°F (USDA FSIS).
Roast
Cook Time
180-270 min
Set Roast To
250°F
cooking temperature
Safe Internal Temp
145°F
63°C · USDA FSIS
Rest for 20 minutes before serving
Resting allows juices to redistribute for a moister result.
| Temperature | Cook Time | Notes |
|---|---|---|
| 250°Frecommended | 180-270 min | Low and slow for 5 lb roast, 30-35 min per pound |
| 325°F | 105-150 min | For 5 lb roast, 15-20 min per pound |
| 450°F | 15-15 min | Initial sear only, reduce temp to 325F after |
| Level | Internal Temp | Description |
|---|---|---|
| rare | °F | Cool red center |
| medium rare | °F | Warm red center |
| medium | °F | Warm pink center |
| medium well | °F | Slight pink center |
| well done | °F | No pink, fully cooked |
Adjusted cooking time
180-270 min
180:00
180 min preset
Prime Rib typically takes 180-270 minutes using the Oven method at 250°F. Times vary by cooking method and weight.
Prime Rib must reach an internal temperature of 145°F (63°C) according to USDA FSIS guidelines. Always verify with a meat thermometer.
Prime Rib can be prepared using 1 different methods: Roast. The most popular method is Roast.
Yes, you can cook Prime Rib from frozen. Add approximately 50% more cooking time (multiply by 1.5x). Always verify the internal temperature reaches the safe minimum before serving.
The most reliable way to check doneness is using an instant-read meat thermometer. Prime Rib is done when the internal temperature reaches 145°F (63°C). Do not rely on color alone.
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