PREPARATION:
- Let the prime rib come to room temperature for about two hours.
- Preheat the oven to 450°F.
- Season the roast with salt and fresh ground black pepper. Wrap the bones in foil to prevent burning.
- In a mixing bowl, combine chopped rosemary, coarse black pepper, Dijon mustard, garlic powder, onion powder and kosher salt to make a paste. Rub this mixture over the meat.
COOKING:
- Place the prime rib in a roasting pan.
- Cook at 450°F for 30 minutes to sear the outside and lock in juices.
- Reduce heat to 350°F and continue cooking until the meat thermometer reads:
- 110°F for medium-rare
- 120°F for medium
- 130°F for medium-well
- 140°F for well-done
Cooking time is approximately 15 to 20 minutes per pound.
Note: the roast will continue cooking after it is removed from the oven.
RESTING:
- Let the roast rest covered with foil for 15 minutes before slicing.