When it comes to cooking prime rib, there are a few things you can do to ensure that your roast is tender and juicy. First, make sure to choose a good quality prime rib. Secondly, cook the roast at a low temperature, around 325 degrees Fahrenheit. Finally, let the roast rest for at least 20 minutes before carving. By following these simple tips, you can be sure that your prime rib will be tender and delicious.