Description

These Roast Beef Sliders are a delicious and easy-to-make appetizer featuring tender deli roast beef, melted provolone cheese, and a flavorful butter-based sauce with Dijon mustard, barbecue sauce, and poppy seeds, all served on soft King’s Hawaiian sweet rolls. Perfect for parties, game days, or casual gatherings, these sliders bake in the oven to a melty, savory perfection that everyone will love.

Ingredients

Scale

Sliders

18 King’s Hawaiian brand sweet rolls (from two 12-count packages)
2 tablespoons mayonnaise
1 to 1¼ pounds deli sliced roast beef (no more than ⅛ inch thick or sandwich sliced)
10 slices non-smoked provolone cheese (approximately ⅛ inch thick, from an 8-ounce package)

Sauce

½ cup salted butter
1 tablespoon Dijon mustard
1½ tablespoons bottled barbecue sauce (Sweet Baby Ray’s Original used)
1 tablespoon poppy seed
1 teaspoon Worcestershire sauce

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Instructions

Preheat the oven: Set your oven to 350°F (175°C) to prepare for baking the sliders.
Prepare the rolls: Slice the rolls in half horizontally, separating the tops from the bottoms. Arrange all the bottom halves close together in a 9×13 inch baking pan, ensuring they touch to form a compact base. Set aside the tops.
Spread mayonnaise: Apply a thin layer of mayonnaise evenly over the bottom halves of the rolls in the baking dish for added moisture and flavor.
Add roast beef: Layer 1 to 2 slices of deli roast beef on each bottom roll. Fold the slices if needed to fit the rolls comfortably and to facilitate easy pulling apart after baking.
Add cheese and assemble: Evenly place the provolone cheese slices over the roast beef. Then cover with the reserved tops of the rolls. Gently press down to compact the sliders, ensuring they heat evenly.
Make the sauce: In a small saucepan over medium heat, melt the butter. Stir in Dijon mustard, barbecue sauce, poppy seeds, and Worcestershire sauce. Allow the mixture to cook for 2-3 minutes until it just reaches a boil, then remove from the heat.
Apply the sauce: Pour the warm sauce evenly over the assembled sliders in the baking pan. Optionally, use a pastry brush to distribute the poppy seeds evenly on top of the rolls.
Bake the sliders: Cover the baking dish tightly with aluminum foil and bake for 20 minutes. Remove the foil and continue baking for another 5-10 minutes until the tops are lightly browned and the cheese has melted completely.

Notes

Ensure the roast beef slices are thin (no more than ⅛ inch) for easy folding and layering.
You can prepare this dish ahead of time by assembling the sliders and refrigerating them before baking.
Use a pastry brush to evenly distribute the butter sauce for best flavor and an attractive finish.
For extra flavor, consider adding caramelized onions or pickles inside the sliders before baking.
Adjust bake time slightly if using a different size or type of baking dish to ensure even heating.