Preheat the oven to 250°F to 300°F
Place the rib roast in a baking dish or roasting pan
Add a small amount of beef broth or water to the pan if desired
Cover the roast loosely with foil
Heat until the internal temperature reaches 120°F to 130°F for medium-rare
Check the temperature with a meat thermometer
Remove from the oven and let rest for 10 to 15 minutes
Slice and serve immediately