01 - Remove the prime rib from the refrigerator at least 1 hour in advance to achieve room temperature.
02 - Set the oven temperature to 450°F (230°C).
03 - Combine minced garlic, rosemary, thyme, olive oil, and Dijon mustard in a small bowl to create a herb garlic paste.
04 - Pat the prime rib dry with paper towels, then season all sides generously with kosher salt and freshly ground black pepper.
05 - Rub the herb garlic paste evenly over the entire surface of the roast.
06 - Place the roast bone-side down on a rack in a roasting pan.
07 - Roast in the preheated oven at 450°F for 20 minutes to develop a crust.
08 - Reduce oven temperature to 325°F (165°C) and roast for an additional 1 hour 40 minutes, or until internal temperature reaches 125°F (52°C) for medium-rare.
09 - Remove from oven, tent loosely with foil, and allow to rest for at least 20 minutes before carving to retain juices.