These sliders transform leftover prime rib into something extraordinary by layering tender slices of beef roast on soft slider buns brushed with a rich garlic butter topping and baked until golden brown.
Serve them with warm prime rib au jus for dipping, and you’ve got a quick, flavorful, and satisfying way to give yesterday’s prime rib new life.
Leftover Prime Rib
The star of this slider recipe is slices of leftover prime rib. You can use any delicious prime rib recipe to prepare this leftover prime rib idea, but all my testing used my viral 5-star prime rib, sous vide prime rib, or smoked prime rib.
The prime rib seasoning used in these recipes complements the flavor of these mini sandwiches beautifully.
Since prime rib is so expensive, I prefer using slices of roast beef rather than chopped beef. Using slices of prime rib steaks keeps the integrity and texture of the original recipe.
If you prefer, you can use the leftover prime rib to make Philly Cheesesteak Sliders, Prime Rib Philly Cheesesteak, Prime Rib Patty Melt, Prime Rib Quiche, or Prime Rib Soup.
Ingredients and Variations
Here are the main ingredients required to make Prime Rib Sliders. For the complete list of ingredients, please reference the recipe card below:
- Prime Rib- Use leftover prime rib, steak, roast beef, or sliced deli meat to make Prime Rib French Dip sliders. They all work exceptionally well when making roast beef sandwiches.
- Caramelized Onions- You can use any onion here. If you don’t have fresh thyme, you can use dried thyme or rosemary as a substitute to flavor.
- Cheese Slices- While I stick to provolone cheese slices, you can use your favorite meltable cheese instead.
- Slider Bread- King’s brand Hawaiian Rolls are, by far, my favorite, but basic dinner rolls and mini hamburger buns also work well.
- Dipping Sauce- Prime Rib Au Jus is the classic dipping sauce, but Prime Rib Gravy, homemade au jus gravy mix, or store-bought au jus mix will also work.
Horseradish Lovers! Slather horseradish cream sauce in the inside of the slider buns before cooking for the classic pairing of prime rib and horseradish.
How To Make Prime Rib Sliders
Here’s some quick visuals showing how to layer and bake prime rib sliders:
Recipe Tips And Tricks
- Cutting the Meat – To save time, consider cutting the meat into thin strips instead of bite-sized pieces.
- Quantity – These sandwiches are loaded with ingredients. You can stretch the recipe by dividing the meat and remaining ingredients between additional slider rolls, if needed.
- Side Dish Ideas – Here are some Prime Rib Side Dish ideas.
Storage – Store leftover prime rib sliders in an airtight container in the refrigerator for up to 3 days.
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More Slider Recipes
Prime Rib Sliders With Caramelized Onions
Ingredients
PRIME RIB SLIDERS
- 8 tbsp unsalted butter, divided
- 1 medium onion, sliced
- 2 tsp fresh thyme or rosemary
- ¼ tsp kosher salt
- 1 package slider rolls (9 or 12-pack) (*Note 1)
- 1-1½ lb leftover prime rib, sliced approx. 1/4 inch thick (*Note 2)
- 12 slices provolone cheese
- 1 package au jus gravy mix, divided (*Note 3)
- 1 tsp Worcestershire sauce
- ½ tsp dried minced garlic
Instructions
- Pre-heat oven to 350°F degrees.
CARAMELIZE THE ONIONS
- In a large skillet over medium-low heat, melt 2 tbsp of butter. Add the onions and toss to coat. Cook, stirring occasionally, for about 15 minutes until the onions are soft and browned. Make sure they don't burn.
- Stir in the fresh thyme, and kosher salt. Remove from the heat and set aside.
MAKE THE GARLIC BUTTER SAUCE
- In a small saucepan over medium heat, melt the remaining butter. Whisk in 1 tbsp of dry au jus mix, Worcestershire sauce, and minced garlic. Cook for 1-2 minutes until well combined.
ASSEMBLE AND BAKE THE PRIME RIB SLIDERS
- Cut the slider rolls in half horizontally, keeping the individual rolls attached.
- Place the bottom half of the slider bread on a greased sheet pan or baking dish. Top with 6 slices of cheese, sliced prime rib, caramelized onions, and the remaining slices of cheese. Place the top of the rolls on the sliders.
- Evenly brush the tops of the sliders with the garlic butter sauce.
- Cover with aluminum foil and bake for 15 minutes. Remove the foil and bake for another 10 minutes, until the cheese is melted and the prime rib is reheated throughout.
- Let the sliders rest for 5 minutes before slicing and serving. Serve with dipping cups of au jus sauce.
MAKE THE AU JUS
- While the sliders are baking, add the remaining packet of au jus mix to a small saucepan over medium heat. Add the cold water amount listed on the au jus package and whisk. Bring to a slow boil, then simmer until ready to serve.