Caramelized Onion & Gruyere Smash Burger

Caramelized Onion & Gruyere Smash Burger

A sophisticated take on the smash burger, featuring sweet, deeply caramelized onions and nutty Gruyere cheese for a gourmet experience.

By RecipeBoss
Servings
4
Time Required
30 min

Ingredients

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1 lb ground beef
1 large yellow onion
4 slices Gruyere cheese
4 count brioche buns
2 tbsp unsalted butter
1 tbsp olive oil
1.5 tsp salt
0.75 tsp black pepper

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Instructions

  1. 1

    Thinly slice the yellow onion. In a skillet, melt 1 tbsp unsalted butter with 1 tbsp olive oil over medium heat. Add onions and cook slowly, stirring occasionally, until deeply browned and sweet, about 20-25 minutes. Season with a pinch of salt. Remove from skillet.

    20 min

  2. 2

    Divide ground beef into 4 equal portions. Form into loose balls and season generously with salt and black pepper.

  3. 3

    Wipe the skillet clean. Add the remaining 1 tbsp unsalted butter and heat over medium-high heat until melted and hot.

  4. 4

    Place a beef ball in the skillet. Smash down firmly with a spatula to create a thin patty. Cook for 1-2 minutes until the edges are crispy and browned.

    1 min

  5. 5

    Top the patty with a slice of Gruyere cheese and a portion of the caramelized onions.

  6. 6

    Flip the burger and cook for another 1-2 minutes until cheese is melted and burger is cooked through.

    1 min

  7. 7

    Toast the brioche buns lightly in the skillet.

  8. 8

    Assemble the burgers.

Perfect With

sweet potato friesmacaroni and cheesepickles