Make the Ultimate Smash Burger: Easy & Delicious Recipe!

Prepare the smash sauce by mixing mayonnaise, ketchup, mustard, and relish in a small bowl. Set aside. Slice all vegetables (onion, pickles, lettuce, tomato) and arrange them for easy assembly.

Divide the ground beef into 4 equal balls, each weighing about 110-120 grams. Do not pack or flatten them yet; keep them loosely formed.

Heat a heavy cast-iron skillet or griddle over high heat until it's smoking hot. Add a tablespoon of vegetable oil or butter and spread it evenly.

Place the brioche buns face down on the hot griddle for 30-60 seconds, or until they are lightly toasted and golden brown. Remove them immediately and set aside.

Place two beef balls onto the screaming hot griddle, leaving space between them. Immediately place a piece of parchment paper over each ball and use a heavy spatula or press to firmly smash each ball flat into a very thin patty, pressing for 10-15 seconds. Remove the parchment paper. Season generously with salt and black pepper.

Cook the patties for 90 seconds to 2 minutes on the first side, until the edges are crispy and browned. Flip the patties. Immediately place a slice of American cheese on top of each patty. Cook for another 30-60 seconds, or until the cheese is beautifully melted and the burger is cooked through.

Assemble your ultimate smash burger: spread a generous amount of smash sauce on the toasted bottom bun. Layer with lettuce, tomato slices, dill pickles, the cheesy smash patties, and thinly sliced onions. Top with the other half of the bun, spread with more sauce if desired. Serve immediately and enjoy!