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Smash burger sliders topped with brie cheese and caramelized onions on a wooden platter.

Smash Burger Sliders with Brie & Caramelized Onions

Juicy and flavorful sliders featuring beef patties, creamy brie, and sweet caramelized onions, perfect for any gathering.
Prep Time 15 minutes
Cook Time 20 minutes
Total Time 35 minutes
Course Appetizer, Main Course
Cuisine American
Servings 4 servings
Calories 380 kcal

Ingredients
  

For the Beef Patties

  • 400 g 400 g ground beef (80/20 or higher fat)
  • Salt and freshly cracked black pepper To taste
  • 1 tsp 1 tsp garlic powder Optional
  • 1 tsp 1 tsp Worcestershire sauce Optional

For Cooking

  • Neutral oil or butter For frying
  • 4-6 slices 4-6 slices brie cheese Rind on or off

For the Caramelized Onions

  • 1 large 1 large yellow onion Thinly sliced
  • 1 tbsp 1 tbsp butter
  • 1 tsp 1 tsp olive oil
  • Pinch of salt
  • 1/2 tsp 1/2 tsp sugar Optional for quicker caramelizing
  • Splash of balsamic or white wine vinegar Optional at the end

For Serving

  • 4-6 pieces 4 slider buns or mini brioche buns
  • Butter For toasting buns
  • Optional extras: arugula, Dijon mustard, aioli, crispy shallots

Instructions
 

Caramelizing the Onions

  • Heat butter and olive oil in a skillet, add sliced onions, season with salt, and cook slowly until golden brown, stirring occasionally. Optional sugar can be added for quicker caramelization.

Preparing the Patties

  • Form ground beef into thick patties, season well with salt, pepper, garlic powder, and Worcestershire sauce, if desired.

Smashing and Searing

  • Heat neutral oil or butter in a skillet, add patties, smash with a spatula, and cook until edges turn crispy. Flip and add brie slices to melt.

Toasting the Buns

  • Butter the slider buns and toast them in the skillet until golden brown.

Assembling the Sliders

  • Place a patty on each toasted bun, top with caramelized onions and optional fresh toppings.

Notes

For an upscale touch, drizzle a little balsamic reduction over the sliders right before serving. These sliders are ideal for sharing.
Keyword Beef, Brie, Caramelized Onions, Sliders, Smash Burger