Jul 13 2026
Restaurants›Stash Box›Smash Burger Recipe

Smash Burger Recipe

Inspired by Stash Box
Time45m
Serves2

Two house patties, cheese, caramelized onion, stash sauce, shredded lettuce, house pickles, served with fries or a high life.

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Ingredients

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Burger Patties

Cheese and Toppings

Method

Burger Patties

  1. 1

    Prepare the Patties

    In a bowl, take the ground beef and divide it into two equal portions. Form each portion into a loose ball and then flatten them into thin patties, about 1/2 inch thick. Season both sides with salt and black pepper.

  2. 2

    Cook the Patties

    Heat a skillet or griddle over medium-high heat. Place the patties on the hot surface. Smash each patty down with a spatula to create a crust. Cook for about 2-3 minutes until browned, then flip and add a slice of cheese on top. Cook for another 1-2 minutes until the cheese is melted.

Cheese and Toppings

  1. 3

    Caramelize the Onions

    Slice the onion into thin rings. In a separate skillet, melt the butter over medium heat, add the onions, and cook slowly, stirring frequently, until they are golden brown and caramelized, about 15-20 minutes.

  2. 4

    Prepare the Toppings

    While the onions are caramelizing, prepare the shredded lettuce and house pickles to have them ready for assembly.

Stash Sauce

  1. 5

    Mix the Stash Sauce

    In a small bowl, combine mayonnaise, ketchup, Dijon mustard, garlic powder, and smoked paprika. Stir well to combine and set aside.

Fries

  1. 6

    Cook the Fries

    Prepare the frozen French fries according to the package instructions, usually by baking or frying. Once cooked, sprinkle with salt.

Assembly

  1. 7

    Assemble the Smash Burger

    On a toasted bun (optional), layer the cooked patties with melted cheese, caramelized onions, shredded lettuce, house pickles, and a generous drizzle of the stash sauce. Top with the other half of the bun.

  2. 8

    Serve

    Serve the smash burger with a side of hot fries and enjoy with a cold High Life if desired.

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