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The Ultimate Guide to Cooking Prime Rib Perfectly Every Time 🥩


  • Author: Mary

Ingredients

Scale
  • 1 (6 to 7 lb) bone-in beef rib roast (34 ribs)

  • 3 tablespoons kosher salt

  • 2 tablespoons coarse ground black pepper

  • 1 tablespoon garlic powder

  • 1 tablespoon onion powder (optional)

  • 2 tablespoons olive oil

  • 2 tablespoons fresh rosemary, finely chopped

  • 1 tablespoon fresh thyme, finely chopped

  • Optional: 1 tablespoon Dijon mustard (for rub)

  • 2 cups low-sodium beef broth (for au jus)

  • 1 tablespoon Worcestershire sauce (for au jus)

  • 1 teaspoon garlic powder (for au jus)

  • Pan drippings from roast (for au jus)


Instructions

  • Bring to Room Temp: Remove the roast from the refrigerator and let it come to room temperature for 2–3 hours. This ensures even cooking.

  • Preheat Oven: Preheat your oven to 250°F.

  • Prepare the Herb Rub: In a bowl, mix kosher salt, black pepper, garlic powder, olive oil, rosemary, thyme, and optionally Dijon mustard into a paste.

  • Season the Roast: Pat the roast dry with paper towels, then rub the herb mixture all over the surface, pressing it into the meat.

  • Place in Roasting Pan: Place the roast bone-side down on a rack in a large roasting pan.

  • Roast Low and Slow: Cook uncovered in the preheated oven until internal temperature reaches:

    • 120°F for rare

    • 125°F for medium rare

    • 130°F for medium
      (This usually takes about 3–4 hours for a 6–7 lb roast)

  • Rest the Meat: Remove the roast from the oven, tent with foil, and let it rest for 30 minutes. The internal temperature will rise by 5–10 degrees.

  • Crank the Heat: Increase oven temperature to 500°F.

  • Sear for Crust: Place roast back in the oven for 8–10 minutes until a crispy, browned crust forms.

  • Make Au Jus: While roast rests again, heat pan drippings in a saucepan over medium heat. Add beef broth, Worcestershire sauce, and garlic powder. Simmer 5–7 minutes. Strain if desired.

 

  • Carve and Serve: Slice roast against the grain into thick slices. Serve with warm au jus or horseradish cream sauce.