Let the Meat Rest: Remove the prime rib roast from the fridge at least 1 hour before cooking. Lightly salt and cover with plastic wrap.
Prepare Herb Rub: In a bowl, mix salt, pepper, olive oil, garlic, rosemary, and thyme. Rub this mixture evenly over the entire roast.
Preheat Oven: Set oven to 500°F (260°C). Place roast in a cast iron skillet or roasting pan (bone-in with bones down, boneless on a rack).
Sear the Meat: Roast at 500°F for 15 minutes to develop a flavorful crust.
Lower Temperature: Reduce heat to 325°F (163°C) and continue roasting. Cook 10-12 min per pound for rare, 13-14 min per pound for medium-rare. Use a meat thermometer for accuracy.
Check Doneness:
Rare: 115-120°F
Medium Rare: 125-130°F
Medium: 135-140°F
Medium Well: 145-150°F
Rest the Meat: Remove from oven, tent with foil, and let rest 30 minutes before carving.
Carve and Serve: Slice against the grain and serve with sides like mashed potatoes and roasted veggies.