Place the prime rib bone-side down on top of the onion and herb bed. Roast the Prime Rib: Place the roasting pan in the oven and immediately lower the temperature to 325°F.

Photo Credit: Thinkstock Frenched Prime Rib Makes 6 to 8 servings Active Time: 2 Hours Total Time: 6 Hours Frenching a cut of meat isn't too challenging and is normally done when serving to ...

When ordering the rib from the butcher ask for a roast with the best marbling. Leave your roast out of the refrigerator long enough for it to be at room temperature. Preheat your oven to 500 degrees.