The first time I tryed this it was real scary. A $120 piece of meat that if it is not done right is just roast beef.
This works with all sizes of rib roasts, bone in or out and is fantastic:
Preheat oven to 500*, have your roast thawed, season with cracked pepper and salt (I use course sea salt for this and course black pepper) Place roast on a baking sheet, something with shallow sides, Fat side up. Place in the oven for 1 hour. After 1 hour turn the oven off. Do not open the door for any reason!! Leave the oven off for 1 hour, turn the oven back on at 350* for 6 to 10 minutes per pound of roast. Turn the oven off again and let it rest for 15 minutes. A suggestion is to purchase remote BBQ thermometer and monitor the very center of the piece of meat, since you are not even looking at the meat. Internal temp should not be over 130* (Depending on the size and it is probed in the center. If it is a large one move the probe closer to the end. If you do this it will roast the out side and slow cook the inside. Yes uncovered is the preffered method. You can Google it for more exact timing or seasoning if you like. The beaty of this method is that if you need more well done (Yuk) parts you can put it back in the oven for more slow cooking. I have used this method on 4 to 7 pounders in my RV and it works great. as well as a 23 pounder in my mothers oven. Make sure you have some real good beef broth and keep it hot, you can cook the meat further if you dunk the slice in it. (A catering trick) My personal choice of seasoning is go sparingly on the salt and mix rub some Chipotle, granulated garlic and raw sugar on the meat an hour before you cook it. Enjoy and Merry Christmas. PM me Seasoning suggestions.
Make sure that you 'Search' for the timing for your size roast!!