Remove the prime rib from the fridge at least 1–2 hours before cooking to allow even roasting.
Preheat your oven to 450°F (230°C).
Season the Prime Rib
Pat the roast dry with paper towels. Rub it all over with olive oil, then sprinkle with salt, pepper, garlic powder, onion powder, rosemary, and paprika.
Place fat-side up on a rack in a roasting pan.
Roast High & Then Low
Roast at 450°F for 20 minutes to develop a crust.
Reduce heat to 325°F (165°C) and continue roasting for about 1½ to 2 hours, or until internal temperature reaches:
120°F (49°C) for rare
130°F (54°C) for medium rare
140°F (60°C) for medium
Use a meat thermometer for accuracy.
Make the Pepper Parm Crust
While the roast is cooking, mix together:
Butter
Parmesan
