Rock Salt Roast Prime Rib Recipe -
Rock Salt Roast Prime Rib Recipe
  • READY IN hrs

Rock Salt Roast Prime Rib

Recipe by  

"This is a very juicy prime rib which is easy to prepare. Surprisingly, it is not too salty and you can't taste the mustard. The horseradish sauce is great. Serve with Yorkshire pudding, or with a baked potato and a salad."

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Original recipe makes 4 servings Change Servings
  • PREP

    10 mins
  • COOK

    1 hr

    1 hr 30 mins


  1. Preheat oven to 450 degrees F (230 degrees C). Line a roasting pan with aluminum foil.
  2. Liberally coat the roast with mustard, so that it is entirely covered. Put a thick layer of rock salt on the foil in the roasting pan, about the size of the bottom of the roast. Set the bottom of the roast on the salt, and press down to embed the salt into the mustard. Completely cover the remainder of the roast with rock salt, pressing it into the mustard. (A lot of salt will fall off into the pan, but that doesn't hurt anything).
  3. Bake uncovered, in preheated oven for 60 minutes, or until internal temperature reaches 145 degrees F (65 degrees C). Let stand 15 minutes. The roast will be encased in a 'shell'. Hit the shell sharply with the back of a knife, and it will crack open and start to fall off. Remove the shell, and place the roast on a cutting board. Slice, and serve with horseradish sauce.
  4. Horseradish sauce: In a small bowl, whip the cream until stiff peaks form. Fold in horseradish to taste.
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Reviews More Reviews

Most Helpful Positive Review
Dec 25, 2006

Just made the roast for dinner tonight. Everything that the recipe said was so true. I remembered this recipe from a past girlfriend years and years ago. Her father used rock salt and it was the best prime rib I had ever eaten. The salt completely crusts over and does not make the roast the least bit salty. The mustard disipates and the meat is the juciest of any prime rib I have ever had!. If you like your prime rib juicy, you MUST try doing it with rock salt. You do need to follow the directions, and use plenty of salt. I used about 5 pounds worth. However, like I mentioned, it crusts on the top, bottom and sides. The top crust just lifted off and the bottom stayed in the foil. The salt on the sides just flaked off during the cooking process. This was by far the best recipe for prime rib I have ever tried. You won't be disappointed.

Most Helpful Critical Review
Jan 25, 2004

I made the mistake of not following the recipe exactly and did not use the full cup of mustard. My salt did not form a true crust and was difficult to get off making the meat salty. It was however very tender and juicy so I think the crust will work if you use the whole cup of mustard.

Sep 27, 2003

This make a beautiful, delicious roast, and the salt shell makes for a dramatic presentation if you chip it away at the table before carving. I did it for Christmas 2001 and it immediatly became the dish we will be making for Christmas dinner from then on. The horeseradish sauce adds zip and is good for those who don't like full strength horseradish

Dec 26, 2005

This was only my second attempt at Prime Rib. This recipe is a keeper. I couldn't find prepared hot mustard, so I used sweet hot mustard. It was a little runny so the salt didn't stay on the sides very well. I also altered the baking time, 1 hour at 450, then I turned down the temp to 350 till the core temp was 120. After resting for a few minutes, the rost was a perfect medium rare. So, our Christmas dinner prime rib was tender and flavorful. Great recipe, thanks!

Dec 18, 2006

WOW! Yummy! I used regular salt. The roast turned out awsome! There were 14 at our Dinner Party and not a plate had any food left on it! This one is definatly a keeper!

Jun 28, 2003

GREAT recipe and easy to make

Dec 25, 2003

I made this for Thanksgiving, and then again last weekend.... It has been requested for Christmas, too! This produces a restaurant quality meal, which was an instant hit with everyone!

Dec 17, 2007

There are so many good reviews for this recipe, I had very high hopes. However, mine turned out very poorly. The salt/mustard never formed any type of crust. I actually had to hold my prime rib under the faucet to wash the salt off. The meat tasted fine, but just as it would have if I had roasted it without doing anything special. Doubtful I will try it.


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