For most of us, cooking prime rib is a once-a-year indulgence. It's expensive and takes enough time to roast that you plan your whole day around it. So the pressure is on for it to be the best ...

Once the temperature has reached 120 degrees, remove the roast from the oven, tent with foil and let it rest for 20 minutes. The temperature will continue to rise.

Pre-heat oven to 250 degrees, place roast in baking pan with aromatic vegetable (onion, celery, carrots) if desired. Roast for approx. 4 hours + (depending on size) or until 125-130 degrees ...

Preheat your oven to 450 F for at least 30 minutes while the prime rib comes to room temperature. Place the roast in a high-sided roasting pan, bone-side down.

Place a boneless roast on a rack inside the pan. Bake prime rib at 500°F for 15 minutes, then reduce the oven temperature to 325°F degrees and continue baking until the desired level of doneness.