Ultimate Smash Burgers Onions (Printable Recipe)
Juicy smash burgers with crisp edges, caramelized onions, tangy sauce, and melted cheese in golden buns.
# Ingredients You'll Need:
→ Burgers
01 -
1 1/2 pounds ground beef (80/20 blend)
02 -
Salt, to taste
03 -
Freshly ground black pepper, to taste
04 -
4 slices American or cheddar cheese
05 -
4 brioche or potato buns
06 -
Dill pickle slices, for layering
→ Caramelized Onions
07 -
2 large yellow onions, thinly sliced
08 -
1 tablespoon unsalted butter
09 -
1 tablespoon olive oil
10 -
1 tablespoon Worcestershire sauce
11 -
1 tablespoon balsamic glaze
12 -
Pinch of salt
→ Burger Sauce
13 -
1/2 cup mayonnaise
14 -
2 tablespoons ketchup
15 -
1 tablespoon yellow mustard
16 -
1 tablespoon dill pickle juice
17 -
1/2 teaspoon paprika
18 -
Dash hot sauce (optional)
# Steps to Follow:
01 -
Heat butter and oil on a griddle over medium heat. Add sliced onions with a pinch of salt and cook 10–15 minutes until soft and golden. Stir in Worcestershire sauce and balsamic glaze, cooking 2 minutes more until reduced and jammy.
02 -
Whisk mayonnaise, ketchup, mustard, pickle juice, paprika, and hot sauce until smooth. Chill until ready to serve.
03 -
Divide cold beef into loose 3–4 oz balls. Handle gently without compressing.
04 -
Preheat griddle to 450–500°F. Place beef balls on surface and smash flat with a heavy spatula. Season with salt and pepper. Cook 1–2 minutes until edges crisp.
05 -
Flip patties, top each with a cheese slice, and cook 1 minute until cheese melts and patties remain juicy.
06 -
Toast buns cut side down on the griddle until golden brown.
07 -
Layer bottom buns with pickles, add patties with cheese, pile on caramelized onions, and spread sauce on top buns before closing.
# Extra Tips:
01 -
Use a metal spatula and firm pressure to achieve crispy burger edges.
02 -
Caramelized onions store well for up to 3 days in the fridge.
03 -
Brioche or potato rolls both toast beautifully and provide a soft texture.