Recipe by Shaindy Wolf

Horseradish-Rosemary Crusted Prime Rib Roast

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Meat Meat
Easy Easy
6-8 Servings

No Allergens specified

2 Hours, 20 Minutes

This roast is always a showstopper. The ingredients in the paste that form the crust on the beef pack a lot of flavor, but the quality of this particular cut of meat is really what makes this dish shine, as long as you are careful to cook it properly. It is best roasted dry (instead of sitting in a pool of liquid like when slow braising a tougher cut of meat such as brisket), and it is important not to overcook it and let it get too well done, otherwise you’ll lose the natural juiciness of this meat. For the amount a prime rib costs, you’ll want to make sure to get it right!   Yield: 6 to 8 generous servings


Horseradish-Rosemary Crusted Prime Rib Roast

  • 1 6-to-7-pound prime rib roast, bones removed and tied back on (ask your butcher to do this) (about 3 to 4 bones)

  • 1 to 1 and 1/2 cups peeled fresh whole garlic cloves

  • 3/4 cup jarred prepared white horseradish, such as Manischewitz

  • leaves from 5 to 6 fresh rosemary sprigs

  • leaves from 6 fresh thyme sprigs or 2 teaspoons dried thyme


Prepare the Horseradish-Rosemary Crusted Prime Rib Roast


Preheat oven to 450 degrees Fahrenheit. Lay prime rib roast bone-side down in a large roasting pan.


In the bowl of a food processor, place garlic (the full one and a half cups if roast is larger), horseradish, rosemary, thyme, salt, and pepper. Pulse until garlic is minced and mixture is beginning to come together. Drizzle olive oil through the open spout as the processor is going until all the ingredients are combined and form a paste. Depending on the amount of garlic, you may not need the full cup of oil.


Generously spoon paste over entire surface of roast, using a spoon or your hands to rub it all over the bottom and sides as well.


Place roasting pan in the oven, uncovered, and bake for 20 minutes. Reduce heat to 350 degrees Fahrenheit for about another one and a half to two hours, depending on size of roast, for medium-rare results. (The general rule for prime rib roast is 15 minutes cook time per pound for rare to medium-rare results.  If you want it more well-done, cook 20 minutes per pound, but you shouldn’t let it cook longer than that. You can also turn oven off and leave roast inside for an extra half hour to continue cooking gently without drying it out.) Wait 20 minutes before carving to allow meat juices to rest and redistribute.


Serve with reserved juices from pan and garnish with fresh rosemary.


If making ahead of time, undercook by 10 to 20 minutes, then remove from fridge several hours before serving to allow meat to come to room temp. Either reheat at 350 degrees Fahrenheit for 30 minutes or 190 to 200 degrees Fahrenheit for two hours. Lightly cover with foil, forming a tent over the meat rather than tightly sealing it. Remove from oven 20 minutes before carving and serving. Do not slice the roast ahead of time and reheat like that, it will totally lose its juiciness and flavor.


Don’t forget that all food, especially such a large roast, continues to cook internally even after you remove it from the oven. This is why it is important to take it out after 15 to 20 minutes of cook time per pound, to ensure you do not overcook and dry out this succulent meat.


I find dried thyme does not change the flavor of this recipe, and fresh thyme is so delicate that it takes a while to strip each stem of its leaves, so using dried is a worthy shortcut here. However, I strongly urge you not to replace the fresh rosemary with dried in this recipe. It will not only give the paste a less impactful flavor, but it will even affect color and consistency.


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Horseradish-Rosemary Crusted Prime Rib Roast

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