Unattended Prime Rib Roast - cooking recipe

Ingredients

prime rib roast (6-9 pounds)
6 large garlic cloves (sliced in half, or use as many as desired)
1 teaspoon salt (or use seasoned salt, use no more than 1 teaspoon or the salt will draw out the moisture from the me)
black pepper (to taste)
2 teaspoons garlic powder (optional)

Preparation

Cut small slits all over in the roast and stuff the garlic cloves in the slits; cover and refrigerate overnight or up to 3 days.
Remove the roast from the refrigerator for 2-3 hours before cooking to bring to almost room temperature (this is an important step!).
Set oven to 500 degrees .
Sprinkle the roast with salt, black pepper and garlic powder.
Place the roast on top of a rack and then in a pan.
Place in oven, and roast at 500 degrees F for 20 minutes.
Reduce the oven temperature to the LOWEST setting.
Leave in the oven for 8 hours (DO NOT OPEN OVEN DOOR for the 8 hours!).
Before serving, turn the oven temperature up to 350 degrees and cook roast for 20 minutes at that temperature.
Remove the roast and let sit for 30 minutes before slicing.