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Smash Burger Sliders with Brie & Caramelized Onions

Deliciously juicy smash burger sliders topped with creamy brie and sweet caramelized onions, perfect for any gathering or cozy night in.
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Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Servings: 4 sliders
Course: Appetizer, Snack
Cuisine: American
Calories: 300
Ingredients Method Notes

Ingredients
  

For the Burger Patties
  • 400 g ground beef (80/20 or higher fat) Choose higher fat content for juicy patties.
  • 1 tsp garlic powder Optional for flavor.
  • 1 tsp Worcestershire sauce Optional for flavor.
  • Salt and freshly cracked black pepper To taste.
For the Caramelized Onions
  • 1 large yellow onion, thinly sliced
  • 1 tbsp butter
  • 1 tsp olive oil
  • 1 pinch salt
  • ½ tsp sugar Optional, for quicker caramelizing.
  • Splash of balsamic or white wine vinegar Optional.
For Assembly
  • 4-6 slices brie cheese Rind on or off, your preference.
  • 4 pieces slider buns or mini brioche buns
  • Butter For toasting buns.
  • Optional extras: arugula, Dijon mustard, aioli, crispy shallots

Method
 

Caramelizing the Onions
  1. In a pan, heat butter and olive oil. Add the sliced onions, pinch of salt, and sugar if using. Stir occasionally until they turn golden and soft.
Preparing the Patties
  1. While the onions are cooking, season the ground beef with salt, pepper, garlic powder, and Worcestershire sauce if desired. Form into small balls.
Cooking the Patties
  1. Heat more oil in the same pan. Place the beef balls on the hot surface and smash them down using a spatula. Cook until crispy and browned on one side.
Toasting the Buns
  1. In a separate pan, add a little butter and toast your slider buns until golden and crispy.
Assembling the Sliders
  1. Layer the smashed beef patties with caramelized onions and brie cheese on the toasted buns, adding optional extras if desired.

Notes

These sliders are best fresh but can be stored in the fridge for up to 3 days if components are kept separate. Reheat in a skillet to restore crunch. Consider freezing patties before cooking.