These French onion cheeseburger sliders are the ultimate bite-sized indulgence. Juicy beef patties are topped with caramelized onions and melted cheese, all tucked into soft slider buns for a savory, melty twist on a classic. Perfect for game day parties or anytime you’re craving big flavor in a small package. —Tyler Smith, Virginia Beach, Virginia
Ingredients
- 3/4 cup butter, divided
- 1 large sweet onion, thinly sliced
- 1 large red onion, thinly sliced
- 2 tablespoons Worcestershire sauce, divided
- 2 pounds ground sirloin
- 1 envelope onion soup mix
- 1 tablespoon salt
- 1/2 tablespoon pepper
- 1 package Hawaiian sweet rolls (24 count)
- 12 slices Swiss cheese
- garlic horseradish aioli:
- 6 garlic cloves, roasted
- 1/2 cup mayonnaise
- 1/4 cup sour cream
- 1/2 medium lemon, juiced
- 2 tablespoons minced chives
- 1 tablespoon prepared horseradish
- 1 tablespoon Worcestershire sauce
Directions
- Preheat oven to 400°. Heat 1/2 cup butter in a large skillet over medium heat. Add onions; cook 5-6 minutes or until starting to lightly brown. Reduce heat to medium-low. Cook 25 minutes, stirring every 5 minutes. Add 1 tablespoon Worcestershire sauce, and stir to combine. Continue cooking until onions are a deep brown color and very soft, 15-20 minutes longer.
- Meanwhile, in a large bowl, combine beef, soup mix, remaining 1 tablespoon Worcestershire sauce, salt and pepper; mix lightly but thoroughly. On a foil-lined baking sheet, shape beef mixture into a rectangle slightly larger than the size of the Hawaiian rolls (about 9x13-in.). Bake until a thermometer reads 160°, 15-20 minutes. Set aside.
- In a medium bowl, mash garlic with a fork until smooth. Add remaining aioli ingredients until well combined. Refrigerate until ready to use.
- Reduce oven temperature to 350°. Without separating rolls, cut rolls in half horizontally; arrange bottom halves onto a parchment-lined baking sheet. Layer bottom halves with beef, caramelized onions and Swiss cheese; replace top halves of rolls. Melt remaining 1/4 cup butter; brush over rolls.
- Bake until cheese is melted and buns are browned, 10-15 minutes. Garnish with additional minced fresh chives, if desired; serve with prepared aioli.
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