Prep the Ingredients. Divide your ground beef into equal portions and gently form them into balls. Season each ball with salt and pepper.
Preheat the Griddle or Skillet. Get your cooking surface (a griddle or a cast-iron skillet) smoking hot. You want it screaming hot to create those crispy edges. Preheat your oven to a low temperature, around 200°F, to keep the first batches of burgers warm while you cook the rest.
Smash the Burgers. Place a ball of beef on the hot griddle or skillet. Immediately smash it down with a spatula. Use another spatula to press down hard to create a thin patty. The thinness is what creates those crispy edges.
Cook to Perfection. Cook the burgers for a short time, about 2 minutes, until the edges are crispy and brown. Flip them over, add cheese, and cook for an additional 1-2 minutes until the cheese is melted, and the burgers are cooked to your desired level of doneness.
Toast the Buns. While the burgers are cooking, spread some butter on the potato rolls and toast them on the griddle for a minute or until they're golden brown.
Assemble Your Burgers. Place the cheesy smash burger on the toasted bun. Top it with pickles, onions, ketchup, and mustard. Add any other toppings you like.
Serve and Enjoy. Your Smash Burgers are ready to devour. Serve them up and watch them disappear!