Hawaiian Roll Roast Beef Sliders

These easy-to-make roast beef sliders are filled with deli roast beef, caramelized onions, cheddar cheese, and horseradish sauce on Hawaiian sweet rolls, then slathered with butter and sesame seeds, and baked until golden. Serve with au jus for a French dip twist!

Ingredients needed:

2 large yellow onions peeled and thinly sliced

2 tablespoons extra virgin olive oil

¼ cup mayonnaise

¼ cup sour cream

2-4 tablespoons prepared horseradish

salt and pepper to taste

12 Kings Hawaiian rolls or other slider rolls

1 lb sliced deli roast beef shaved or chipped

½ lb sliced horseradish cheddar cheese or cheddar, swiss, provolone

½ cup crispy fried onions optional

¼ cup salted butter melted

½ teaspoon ground mustard or spicy brown, dijon

¼ teaspoon onion powder

¼ teaspoon garlic powder

1 tablespoon sesame seeds

1 cup beef bone broth optional (for au jus dipping)

1 teaspoon worcestershire

kosher salt to taste

Directions:

1. Peel, half, and slice the onions very thinly.

2. Heat a large skillet over medium-low heat. Add the olive oil and onions and toss to coat. Allow the onions to cook for 5 minutes, toss again, then turn the heat to the lowest setting.

3. Continue cooking the onions for 30-40 minutes, stirring every 5 minutes or so, until the onions are golden brown and turn almost jammy-looking. Once cooked, remove from the heat to cool.

4. Note: If the onions are burning at any point, add ¼ cup of water to loosen any browned bits from the bottom of the pan. The water will evaporate during the remaining cooking process.

5. While the onions cook, whisk together all ingredients for the horseradish sauce. Taste for seasoning and add more salt and pepper as necessary.

6. Preheat the oven to 350℉ and add parchment paper to a 9x13” pan or small sheet pan.

7. Slice the hawaiian rolls in half (lengthwise through the soft centers) keeping the entire loaf in tact. Use a large serrated knife for this.

8. Place the bottom half of the rolls into the pan, then spread generously with the horseradish sauce.

9. Layer the roast beef in mounds all over the buns, then top evenly with caramelized onions, and slices of cheese to fully cover. Allow the cheese to hang over the sides slightly.

10. Spread more horseradish sauce on top of the cheese slices, and sprinkle on crispy onions (if using).

11. Place the lid of the buns on top (be sure it’s even) and gently press down. Gently pull apart the tops so they are slightly cracked open, but not fully removed from each other (so the butter can get in there).

12. Melt the butter, then stir in the mustard powder, onion powder, and garlic powder. Brush or gently pour the mixture all over the tops of the buns, then sprinkle on the sesame seeds.

13. Cover lightly with foil and bake for 10 minutes. Remove the foil and bake for another 10 minutes until golden.

14. While the sliders are baking, heat up the beef stock with the worcestershire. Add salt to taste.

15. Use a serrated knife to gently slice through the slider buns, pressing down through the bottoms. Use a spatula to help remove them from the pan. Serve hot with the au jus in cups for dipping.

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