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Smashed Cheeseburger with caramelized onions

When it's late and you're craving something real, this is your recipe. No fancy tricks, no long lists, just a burger that sizzles in the pan and melts on your tongue. The secret is the technique: press hard on a blazing-hot cast-iron skillet so you get that perfect crispy crust. Cheese on, onions in, bun closed. Enjoy.

Recipe

Smashed Cheeseburger with caramelized onions

Crispy smashed burgers with melted cheese and sweet caramelized onions. This is the dish you want to make at midnight and never forget.

Course Main course
Kitchen American
Servings 2 people

Preparation time

Preparation time 10 min
Total 40 min

Equipment

  • Frying pan
  • Spatula
  • Cutting board
  • Knife
  • Small bowl or burger press

Ingredients

  • 400 g ground beef (20% fat, for flavor)
  • 4 slices melting cheese (cheddar or gouda)
  • 2 brioche buns
  • 2 onions, thinly sliced
  • 1 tsp sugar
  • 2 tbsp mayonnaise
  • 1 tsp mustard
  • Pickles to taste
  • Some iceberg lettuce
  • Butter for frying
  • Salt and pepper to taste

How to make a smashed cheeseburger with caramelized onions?

    1. Heat a splash of oil in a frying pan over medium heat. Add the sliced onions with a pinch of salt and a teaspoon of sugar. Cook them gently for 20 minutes over low heat until golden brown and soft. Set aside.
    2. Divide the ground beef into 4 equal balls of about 100 grams each. Lightly season with salt and pepper.
    3. Place the frying pan over high heat and let it get very hot. Add a small knob of butter and place 2 meatballs in the pan.
    4. Press each ball immediately and firmly flat with a spatula or the bottom of a sturdy bowl into a thin patty about 1 cm thick. Hold the pressure for 10 seconds.
    5. Cook the burgers for 2 minutes without touching them. You'll see the edges turn brown. Flip them with a spatula and immediately place a slice of melting cheese on each burger.
    6. Cook another 1 minute until the cheese is nicely melted. Repeat with the other 2 beef balls.
    7. Toast the brioche buns briefly in the same pan in the cooking fat. That adds extra flavor.
    8. Spread the bottom of each bun with mayonnaise and mustard. Stack 2 burgers, spoon the caramelized onions over them and add pickles and iceberg lettuce. Top with the bun and serve immediately.

The key to a good smashed burger is heat. A heavy frying pan retains heat well and gives you that crispy crust development that makes a burger truly tasty. The hotter the pan, the better the result. No patience required, just a good pan.

This recipe also works perfectly for a casual dinner with friends. Make the caramelized onions ahead and set everything out on the table. Everyone builds their own burger. Eating together, enjoying together. That's exactly what this dish was made for.