Skip to main content New<> this month
Get the Allrecipes magazine

Amazing Slow-Roasted Prime Rib

Rated as 0 out of 5 Stars
1 made it  |  0 reviews   |  1 photos

"I had never made prime rib before, but this slow-roasted recipe is so easy. It originated from my mother-in-law who makes prime rib often; with a lot of research, I have made a few changes and prefer my recipe with the alterations."
Added to shopping list. Go to shopping list.


4 h 20 m servings 225
Original recipe yields 24 servings (1 9-pound prime rib)


{{model.addEditText}} Print
  1. Mix liquid seasoning and Worcestershire sauce together with garlic in a bowl. Pour over prime rib in a container. Marinate, turning every 30 minutes, 1 to 2 hours.
  2. Preheat the oven to 450 degrees F (230 degrees C).
  3. Place prime rib on a baking rack set inside a large baking dish.
  4. Bake in the preheated oven until all juices are sealed in, about 45 minutes. Reduce temperature to 325 degrees F (165 degrees C) and continue roasting until an instant-read thermometer inserted into the center reads 130 to 140 degrees F (54 to 60 degrees C), about 2 hours more. Let sit 30 minutes to 1 hour before slicing.


  • Cook's Notes:
  • 30 minutes per pound = medium internal temp should be 130 to 140 degrees F (54 to 50 degrees C).
  • Make sure to add water to the bottom of the baking dish so that the drippings do not burn during cook time. Feel free to use the drippings to make a sauce/gravy.
  • Editor's Note:
  • Nutrition data for this recipe includes the full amount of marinade ingredients. The actual amount of marinade consumed will vary.

Nutrition Facts

Per Serving: 225 calories; 14.5 1.3 21 60 144 Full nutrition

Explore more


Read all reviews 0