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French Onion Meatball Sliders Recipe

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4.1 from 14 reviews

These French Onion Meatball Sliders combine juicy, savory meatballs baked in rich French onion soup with sweet caramelized onions and melted Swiss cheese, all served on soft Hawaiian sweet rolls. Perfect as a flavorful appetizer or party snack, these sliders offer a delightful balance of textures and classic French onion flavors in a fun, handheld form.

  • Total Time: 40 minutes
  • Yield: 12 sliders

Ingredients

Meatballs

  • 1 pound hamburger meat
  • ⅔ cup bread crumbs
  • 1 large egg, whisked
  • Salt and pepper, to taste
  • 1 can French onion soup

Onions

  • 2 medium yellow onions, thinly sliced
  • 2 tablespoons oil

Assembly

  • 2 tablespoons butter, softened
  • 18 slices Swiss cheese (or Gruyere cheese, sliced)
  • 1 12-count pack Hawaiian sweet rolls

Instructions

  1. Mix the meatball ingredients: In a medium-sized bowl, combine the hamburger meat, bread crumbs, whisked egg, salt, and pepper. Mix well until the egg is fully incorporated and the mixture is uniform.
  2. Preheat the oven: Set your oven to 350°F (175°C) to prepare for baking the meatballs.
  3. Form meatballs: Using a spring release scoop or your hands, shape the meat mixture into evenly sized balls suitable for sliders.
  4. Bake the meatballs in soup: Place the meatballs in a baking dish, pour the French onion soup evenly over them, and bake for 25 minutes at 350°F until fully cooked.
  5. Caramelize the onions: While the meatballs cook, heat 2 tablespoons of oil in a medium skillet over medium-low heat. Add the thinly sliced onions and cook, stirring frequently, for about 15 minutes until they are deeply caramelized and soft. Remove from heat.
  6. Prepare the rolls: Slice the Hawaiian rolls in half horizontally. Spread softened butter on each cut side, then place the rolls butter side up on a cookie sheet.
  7. Toast the rolls: Once the meatballs are done, remove them from the oven and set aside. Turn the oven to low broil and place the buttered rolls in the oven for 3-5 minutes until the butter melts and the tops of the rolls start to toast.
  8. Assemble sliders: Remove the rolls from the oven (keeping the oven on low broil). Place one or more meatballs on the bottom halves of the rolls depending on size, add a generous portion of caramelized onions on top, and then cover with slices of Swiss cheese.
  9. Broil to melt cheese: Return the assembled bottoms with meatballs, onions, and cheese to the oven on low broil. Broil until the cheese is golden, bubbly, and melted, watching closely to avoid burning.
  10. Finish and serve: Remove the sliders from the oven, top each with the other half of the roll, press gently, and serve warm.

Notes

  • For best flavor, use freshly ground beef with moderate fat content (80/20) to keep meatballs moist.
  • If you prefer, Gruyere cheese can be substituted for Swiss cheese for a more authentic French onion flavor.
  • You can prepare the caramelized onions a day ahead and reheat gently before assembling.
  • Adjust the number of meatballs per slider depending on their size and your preference for slider heftiness.
  • Keep a close eye while broiling to prevent cheese from burning.
  • These sliders are best served immediately to enjoy the contrast of warm meatballs and soft rolls.
  • Author: Chef
  • Prep Time: 15 minutes
  • Cook Time: 25 minutes
  • Category: Appetizer
  • Method: Baking
  • Cuisine: American-French fusion

Find it online: https://avascooking.com/french-onion-meatball-sliders-recipe/