Prime Rib

1 . Stage

Remove rib roast from packaging and place in a large roasting pan. Let come to room temperature, about 30 minutes.

2 . Stage

Preheat oven to 450º. Generously season all sides of rib roast with salt and pepper. Arrange roast in roasting pan fat side up. Arrange half of the rosemary in bottom of pan around roast.

3 . Stage

Roast 30 minutes. Reduce oven temperature to 350º and continue to roast until an instant-read thermometer inserted into thickest part registers 110° for medium-rare, about 1 hour 30 minutes more. (Plan on about 15 minutes per pound.)

4 . Stage

Remove roast from oven, cover with foil, and let rest 30 minutes.

5 . Stage

To serve, slice along ribs to remove from roast, then separate each rib. Slice roast against the grain. Arrange roast, ribs, and remaining rosemary on a platter.