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Roast Beef Sliders with Caramelized Onions

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  • Prep 25 min
  • Total 60 min
  • Servings 12
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If the piles of tender roast beef on top of pull-apart Hawaiian rolls don’t get you, surely the combination of caramelized onions, horseradish mayonnaise and Swiss cheese will. Basically, you need this sandwich bake in your life, and you need it now. Recipe by
Created Feb 26, 2018
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  • 1 tablespoon oil
  • 2 large yellow onions, thinly sliced (about 4 cups)
  • 1/3 cup mayonnaise
  • 1 tablespoon prepared horseradish
  • 1 package 12-count dinner rolls (not pulled apart)
  • 12 oz (340 g) deli roast beef (about 12 slices)
  • 4 slices baby Swiss cheese (about 3 oz/85 g)
  • 1 tablespoon butter, melted
  • 1 teaspoon finely chopped fresh parsley


  • 1
    Heat oven to 375°F. In 12-inch skillet, heat oil over medium-high heat until hot; cook onions in oil 15 to 20 minutes, stirring frequently, until onions are soft and golden brown. If onions start to stick, stir in 1/4 cup water.
  • 2
    Meanwhile, in small bowl, mix mayonnaise and horseradish. Slice sheet of dinner rolls in half horizontally; place bottom half in ungreased 13x9-inch (3-quart) baking dish. Spread cut side of roll top with horseradish mayonnaise. Mound roast beef on each roll bottom. Spoon caramelized onions over beef; top with Swiss cheese. Place top half of rolls over cheese.
  • 3
    In small bowl, stir melted butter and parsley until well mixed. Brush over top of rolls. Bake 19 to 22 minutes or until rolls are golden brown and cheese is melted. Cut into individual sliders, and serve.

Expert Tips

  • Tip 1
    One cup of shredded Swiss cheese can be substituted for sliced cheese in this recipe.
  • Tip 2
    Trademarks referred to herein are the properties of their respective owners.

Nutrition Information

210 Calories, 11g Total Fat, 10g Protein, 18g Total Carbs

Nutrition Facts

Serving Size: 12
Total Fat
Saturated Fat
Trans Fat
Total Carbs
Dietary Fiber
% Daily Value*:
*Percent Daily Values are based on a 2,000 calorie diet.
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