Preheat the oven to 450°F. Soften butter, then stir in rosemary, garlic, salt, pepper, and thyme to create a garlic butter paste.
Rub the paste all over the prime rib roast and wrap aluminum foil around all exposed rib bones. Place the roast in the center of a roasting pan with a rack.Roast at 450°F for 15 minutes. Then, reduce the temperature to 325°F and cook for approximately 2 hours. (Check your meat thermometer for desired doneness).
Remove from the oven and tent with aluminum foil. Let rest tented for 15 minutes. Slice rib roast, serve, and enjoy!
Use a roasting pan with a rack. This will help heat rotate evenly as the roast cooks.
Bring your standing rib roast to room temperature by letting it sit on the counter for approximately 2 hours. This will ensure even cooking throughout.
Always make sure you let your rib roast rest for approximately 15 minutes before cutting into it. This will ensure the juices stay in the roast and you will have a juicy prime rib roast.
Ask your butcher to french the rib roast for you. This makes for such a pretty presentation. When roasting, covered the bone ends with aluminum foil so they didn't dry out.