Ingredients

SECRET SAUCE

• 1/3 cup tomato ketchup
• 1/4 cup mayonnaise
• 2 tsp mustard
• 2 tsp Worcestershire sauce
• 1 tsp hot sauce, optional

SMASH BURGERS

• 1 lb ground beef
• 1 tsp salt
• 4 slices American cheese
• 4 hamburger buns
• 1/4 head green leaf lettuce, shredded
• 1 tomato, sliced

Preparation

To make the Secret Sauce, in a small bowl, whisk together the ketchup, mayonnaise, mustard, Worcestershire sauce, and hot sauce. Set it aside.
Divide the ground beef into 4 equal sections if you’re making full-size burgers or 6 equal parts for sliders. Roll each section gently into balls and place them on a plate or baking sheet.
Heat a well-greased cast-iron pan or griddle over high heat. Place a ground beef ball in the pan and using a large flat spatula, smash them until they are approximately 1/2 inch high. Cook for about 2 minutes or until the burger develops a deep brown color. Flip the patty and add the cheese immediately. Cook for an additional 1 to 2 minutes, or until the cheese is fully melted and the burger is cooked to your liking.
Transfer the cooked patty to a bun, top with Secret Sauce, lettuce, and tomato. Enjoy immediately.