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Slow-Roasted Garlic Prime Rib with Umami Marinade

Slow-Roasted Garlic Prime Rib with Umami Marinade delivers a rich, beef-forward flavor elevated by soy-based seasoning, Worcestershire, and plenty of garlic. The long, gentle roast yields a rosy, ultra-tender interior with a beautifully browned crust. It’s a showstopping centerpiece for holidays or special-occasion dinners when you want classic steakhouse depth at home.

  • Prep5 mins
  • Cook2 hrs 45 mins
  • Serves24
  • DifficultyMedium
Slow-Roasted Garlic Prime Rib with Umami Marinade
  1. 1

    Mix liquid seasoning, Worcestershire sauce, and garlic in a bowl; pour over the prime rib in a large glass or ceramic bowl.

  2. 2

    Marinate in the refrigerator for 1 to 2 hours, turning every 30 minutes.

  3. 3

    Preheat the oven to 450 degrees F (230 degrees C).

  4. 4

    Set the prime rib on a baking rack placed inside a large baking dish.

  5. 5

    Roast in the preheated oven until the juices are sealed in, about 45 minutes.

  6. 6

    Lower the oven temperature to 325 degrees F (165 degrees C).

  7. 7

    Keep roasting until an instant-read thermometer inserted into the center registers 130 to 140 degrees F (54 to 60 degrees C), about 2 hours more.

  8. 8

    Let the prime rib rest before slicing, 30 minutes to 1 hour.