To Make The Prime Rib Roast

• 2 hours prior to cooking - In a small bowl (or in a mortar and pestle) add the black pepper, garlic powder, onion powder, Rosemary, Paprika, Mustard, and minced garlic and mix thoroughly to create the rub that will create that lovely crust on the outside of the meat). Rub the roast thoroughly with Olive Oil to coat the roast which will allow the rub to stick to it. Next, generously coat the roast with the spice rub and coat completely. Place the roast on a plate in your refrigerator until 30 minutes before cooking. 
• 30 minutes before cooking - Take the roast out of the fridge and allow it to come to room temperature (30 minutes). Also, preheat your oven to 450 degrees F and allow to heat while the roast is coming up to room temperature.  
• Place the roast on a rack in a roasting pan, the fat side should be facing up and bone side down.
• Cook your roast for 15 minutes, then reduce the oven temperature to 325 degrees F. Continue to cook your roast until your meat thermometer reads 125 degrees F. Check the temperature at the thickest part of the roast. Make sure the thermometer is not touching the bone to get a true reading. Estimate about 15 minutes of cooking time per pound of prime rib. 
• Once the thermometer hits its target temperature, remove the roast from the oven, cover it in foil, and let it rest for 20 minutes. At this time, use the pan drippings to create your au jus (instructions below). The roast will continue to cook as the juices inside settle, raising the internal temperature to 135 degrees F, and then it will come back down to 125 in that 20 minutes. Untie the roast and slice and serve for a perfect prime rib.