how to cook in oven a prime beef roast
Remove prime rib from refrigerator and allow the meat to come to room temperature, about 3 hours depending on the size of the roast. Preheat oven to 425 degrees F (220 degrees C). Line a roasting pan with aluminum foil. Unwrap the roast and place onto roasting pan; blot with paper towels. Sift together flour, pepper, salt, paprika, onion powder, garlic powder, and celery seed into a small bowl. Coat the roast all over with the flour mixture. Roast in preheated oven until cooked to your desired degree of doneness; about 4 1/2 hours (20 minutes a pound) for medium-rare.