Roast Beef Sliders

Roast beef, cheese, creamy horseradish mayo, and caramelized onions come together in these Roast Beef Sliders that bring flavor to the dinner table. These are great for a weeknight dinner, or for game night or tailgating.

Course Main Dish

Cuisine American

Prep Time 15

Cook Time 45

Total Time 1

Servings servings

Calories 688kcal

Author Deborah Harroun

Ingredients

2 medium sweet onions
2 tablespoons extra virgin olive oil
1/2 cup mayonnaise
1 tablespoon horseradish
1 (12-count) package King’s Hawaiian or Savory Butter Rolls
8 oz sliced provolone cheese
3/4 lb thinly sliced deli roast beef
1/4 cup butter melted
1 tablespoon dijon mustard
1 tablespoon chopped fresh parsley
1 teaspoon garlic flakes
1/4 teaspoon onion powder

Instructions

Peel the onions, cut in half, and then slice into half moons.
2 medium sweet onions
Heat the olive oil in a skillet over medium-low heat. Add the onions and a little bit of salt. Cook, stirring often, until the onions are caramelized. This should take about 20 minutes. You want to cook them low and slow.
2 tablespoons extra virgin olive oil
While the onions are cooking, preheat the oven to 375ºF. Spray a baking dish with nonstick cooking spray.
In a small bowl, mix the mayonnaise and the horseradish together.
1/2 cup mayonnaise, 1 tablespoon horseradish
Use a serrated knife to cut the rolls in half horizontally, keeping them connected. Place the bottom half of the rolls in the prepared baking dish. Spread half of the mayonnaise mixture over the bottom.
1 (12-count) package King’s Hawaiian or Savory Butter Rolls
Layer half of the cheese over the mayonnaise, followed by the roast beef. The top with the caramelized onions. Top with the remaining cheese.
8 oz sliced provolone cheese, 3/4 lb thinly sliced deli roast beef
Spread the remaining mayonnaise mixture on the cut side of the top half of the rolls, then place the tops, cut side down, over the cheese.
In another bowl, mix together the butter, Dijon, parsley, garlic flakes, and onion powder. Brush the mixture over the tops of the rolls. Cover the dish with foil.
1/4 cup butter, 1 tablespoon dijon mustard, 1 tablespoon chopped fresh parsley, 1 teaspoon garlic flakes, 1/4 teaspoon onion powder
Bake in the preheated oven for 20 minutes, then remove the foil and cook an additional 5 minutes.
Cut the sliders before serving.

Notes

I like to bunch up the roast beef instead of laying it flat. The key is to get very thinly sliced roast beef.

Feel free to swap out the provolone for Swiss cheese, which is a more traditional flavor combination.

Nutrition information provided as an estimate only. Various brands and products can change the counts. Any nutritional information should be used as a general guide.

Nutrition