Creating the Copycat Smash Burger is simple if you follow these straightforward steps:

1. Prepare Your Ingredients: Gather all the ingredients and allow the ground beef to sit at room temperature for about 10 minutes.

2. Preheat the Skillet: Heat a large cast-iron skillet or a heavy frying pan over medium-high heat until it’s hot.

3. Form Patties: Divide the ground beef into four equal portions, about 4 ounces each. Gently shape them into loose balls; do not compress tightly.

4. Season: Lightly season the top of each beef ball with salt and pepper.

5. Smash the Patties: Place beef balls into the hot skillet. Using a sturdy spatula, smash each ball flat to about 1/2 inch thick.

6. Cook: Allow the patties to cook for about 2-3 minutes without moving them. Wait until the edges are crispy and the juices are bubbling on top.

7. Flip and Add Cheese: Flip each patty and add a slice of cheese (if using) on top. Cook for another 2 minutes until the cheese is melted and the patty is cooked through.

8. Toast the Buns: While the burgers finish cooking, cut the hamburger buns in half and lightly toast them in another skillet or on a grill until golden brown.

9. Assemble the Burgers: Spread mayo and ketchup on the top and bottom of each bun. Layer shredded lettuce, the cooked patty with melted cheese, onions, tomato slices, and pickles.

10. Serve: Place the top half of the bun on each burger and let them rest for a few minutes before serving. This allows the juices to redistribute.