How to slow cook a prime rib roast?
as a pro chef i can tell you the best way to slow cook a prime rib roast is to first cover it in some sort of spice rub such as spike or montreal seasoning which you can buy at the store. preheat the oven to 325 degrees place the roast standing up on a metal grate or rack on a baking pan. using a meat thermometer is the best way to determine if it is done, however bake it for a good 1 1/2 to 3 hours at this temperature, place the temp stick in the center of the roast it should read 140 for medium rare in the center most part.
