Cooking Roast Prime Rib

Pre heat oven to 300(degree sign).  Place prime rib in roasting pan or tray with bone side down.  Cook roast for 2 to 3.5 hours depending on size of roast.  A meat thermometer is a must and will help to determine the desired degree of doneness.  

 Use the chart as followed:

125-130 rare

130-135 med rare

135-145 med

145-155 med well

155 plus well

When roast reaches desired internal temperature, pull roast from oven and let stand for 10-15 minutes before removing ties, removing bones and slicing.