Allow roast to stand at room temperature for at least 1 hour.
Preheat the oven to 375 degrees F (190 degrees C).
Combine the salt, pepper and garlic powder in a small cup.
Place the roast on a rack in a roasting pan so that the fatty side is up and the rib side is on the bottom.
Rub the seasoning onto the roast.
Roast for 1 hour in the preheated oven.
Turn the oven off and leave the roast inside.
Do not open the door.
Leave it in there for 3 hours. 30 to 40 minutes before serving, turn the oven back on at 375 degrees F (190 degrees C) to reheat the roast.
The internal temperature should be at least 145 degrees F (62 degrees C).
Remove from the oven and let rest for 10 minutes before carving into servings.
Tips for a perfect rib roast:
- Be sure to allow the roast to come to room temperature before cooking. This will help it cook evenly.
- Don't overcook the roast. The internal temperature should be at least 145 degrees F (62 degrees C), but no more than 155 degrees F (68 degrees C).
- Let the roast rest for 10 minutes before carving. This will help the juices redistribute throughout the roast, resulting in a more tender and juicy piece of meat.