Rub the prime rib roast with olive oil, then season evenly with kosher salt, black pepper, and minced garlic.
Place the roast in a roasting pan, bone-side down.
Roast at 450°F (232°C) for 15 minutes, then reduce the oven temperature to 325°F (163°C) and continue roasting for about 1 hour and 45 minutes, or until the internal temperature reaches 130°F (54°C) for medium rare.
Remove the roast from the oven and let it rest for at least 20 minutes before carving.
Slice the prime rib and serve with your favorite sides.
Notes
Allowing the roast to rest is crucial for juicy slices. Consider serving with au jus or horseradish sauce.