Blend all of the ingredients together in a mixing bowl. Taste and adjust the salt level as needed for personal preferences
To use on the Prime Rib, first bring the meat to room temperature. Pat the surface dry with paper towels to reduce excess moisture, then sprinkle 1 teaspoon of the mixture over the surface. Use one hand to rub the spices in, adding more as desired with the other hand until the entire roast is covered evenly
Notes
The brown sugar is easily swapped for half as much granulated sugar if that’s what you have on hand, or omitted entirely. It does help balance the flavor of the rub and encourages browning on the outside of the Prime Rib