– 1 5-pound Bone-In Prime Rib Roast – 1 cup unsalted butter* – 5 cloves garlic minced – 1 teaspoon garlic powder – 1/2 tsp black pepper – 1 Tbsp fresh rosemary chopped** – 1 Tbsp fresh thyme chopped** – 1 Tbsp sea salt***
Bake until it's cooked to your desired doneness: - Rare: 120-125°F - Medium-rare: 130-135°F - Medium: 138-140°F For a 5-pound prime rib, it takes just under 2 hours to reach medium-rare.