There’s nothing quite like the magic of transforming yesterday’s elegant prime rib into today’s showstopping meal! Leftover rib roast is pure gold in the kitchen, and honestly, sometimes I think the leftovers taste even better than the original roast. Whether you’re looking to create something warm and comforting or elegant enough for company, these leftover rib roast recipes will have everyone asking for seconds.
The beauty of working with leftover rib roast is that the hard work is already done. The meat is already perfectly cooked, tender, and full of rich, beefy flavor. All you need to do is get creative with how you present it! From classic French dips dripping with au jus to creamy, elegant beef Wellington bites, the possibilities are truly endless.
I absolutely love how versatile leftover rib roast can be. You can slice it thin for sandwiches, cube it for hearty stews, or shred it for tacos. The key is to handle it gently so you maintain that beautiful, tender texture. One of my favorite tricks is to warm the meat gently in its own juices rather than heating it dry, which keeps it succulent and delicious.
Today, I’m sharing my absolute favorite way to use leftover rib roast: a stunning beef and horseradish cream sandwich that’s elegant enough for lunch with the ladies but easy enough for a quick weeknight dinner. This recipe celebrates the quality of your leftover meat while adding just enough pizzazz to make it feel like a brand new dish.
I also love serving leftover rib roast in a creamy beef stroganoff situation or nestled into crispy homemade baking powder biscuits. The contrast of temperatures and textures is just divine. You could even try it in unexpected flavor combinations with Asian-inspired preparations.
What I love most about this recipe is that it honors the investment you’ve already made in that beautiful prime rib while creating something that feels completely fresh and exciting. It’s the perfect example of how great cooking is really about respecting your ingredients and getting creative with what you have on hand.
For more inspiration on elevated comfort food, check out Serious Eats’ collection of beef recipes, or Bon Appétit’s latest takes on classic dishes. And if you’re looking for more traditional preparations, The New York Times Cooking section has some wonderful leftover recipes too.
Ingredients
- 1 pound leftover prime rib roast, thinly sliced
- 4 tablespoons butter
- 2 cups beef broth or reserved pan drippings
- 3 tablespoons prepared horseradish
- 1 cup heavy cream
- 2 tablespoons Dijon mustard
- 1 shallot, minced
- 2 cloves garlic, minced
- 1 teaspoon fresh thyme leaves
- Salt and freshly ground black pepper to taste
- 4 brioche buns or crusty rolls
- 2 tablespoons fresh parsley, chopped
- 1 tablespoon apple cider vinegar
- Arugula or watercress for serving (optional)
Instructions
- Start by gently warming your leftover rib roast. Remove it from the refrigerator about 20 minutes before you plan to cook, as this helps it warm through evenly without drying out. If your roast is in large pieces, thinly slice it against the grain using a sharp knife.
- In a large skillet over medium heat, melt 2 tablespoons of butter. Add the minced shallot and cook for about 2-3 minutes until softened and fragrant, stirring occasionally to prevent browning.
- Add the minced garlic to the pan and cook for another minute, just until you can smell that gorgeous garlic aroma. Be careful not to let it burn, as this will make the sauce bitter.
- Pour in your beef broth (or reserved pan drippings if you have them—these add incredible flavor!) and stir well, scraping up any browned bits from the bottom of the pan. These little bits are liquid gold and add so much depth.
- Bring the broth to a gentle simmer and reduce it by about one-third, which should take approximately 5-7 minutes. This concentrates the flavors and creates a more luxurious base for your sauce.
- While the broth is reducing, in a small bowl, whisk together the heavy cream, horseradish, and Dijon mustard. This mixture is the star of the show, so don’t skip it! The horseradish adds a sophisticated kick that elevates the whole dish.
- Once the broth has reduced, slowly pour the cream mixture into the pan while whisking constantly. This prevents lumps and ensures a silky, smooth sauce. Continue whisking until everything is well combined.
- Add the remaining 2 tablespoons of butter to the sauce for richness, along with the fresh thyme and apple cider vinegar. The vinegar adds brightness and balance to the richness of the cream.
- Gently add your sliced leftover rib roast to the sauce and stir carefully to coat each piece. Let it warm through for about 3-4 minutes on low to medium-low heat. This is crucial: keep the heat gentle so you don’t toughen the already-cooked meat.
- Taste the sauce and season with salt and freshly ground black pepper. Remember, your beef broth and leftover meat already have salt, so taste before you add more.
- While your beef is warming in the sauce, lightly toast your brioche buns or rolls. You can do this in a separate skillet with a little butter, or in a toaster oven at 375°F for about 3-4 minutes until golden and slightly crispy.
- To serve, place a toasted bun on each plate and generously fill with the beef and its creamy horseradish sauce. Sprinkle with fresh parsley and serve immediately while everything is warm and the sauce is still silky.
- If desired, add a handful of peppery arugula or watercress to the sandwich for a fresh contrast to the rich, creamy beef. This little addition brings brightness and textural interest that makes the dish feel complete.
Pro Tips
o If you don’t have reserved pan drippings from your original roast, use good quality beef broth or even a combination of beef broth and red wine for extra depth.
o The horseradish is the secret ingredient here. If you can’t find prepared horseradish, you can make your own by grating fresh horseradish root and mixing it with a bit of vinegar and salt. Start with less and add more to taste—it’s potent!
o For a lighter version, you can substitute Greek yogurt or sour cream for half of the heavy cream. The sauce will be slightly less rich but still absolutely delicious.
o This sauce can be made up to 2 days in advance and stored in an airtight container in the refrigerator. Simply reheat gently over low heat, adding a splash of broth or cream if it’s too thick.
o Leftovers can be stored in the refrigerator for up to 4 days. The flavors actually meld and improve as it sits, making this a great make-ahead option for entertaining.
o You can also serve this over creamy mashed potatoes, egg noodles, or rice instead of on buns for a completely different presentation.
o The key to this dish is gentle heating. High heat will toughen the already-cooked beef, so patience is your friend here.
o This recipe is naturally gluten-free if you use gluten-free buns or serve it over potatoes or rice instead.
o For a fancier presentation, you could serve this as open-faced sandwiches on thinly sliced toasted brioche, allowing the beautiful sauce to cascade down the sides.