01 - Divide ground beef into four equal balls and flatten each into a patty approximately 1/3 inch thick.
02 - Season both sides of each patty evenly with kosher salt and freshly ground black pepper.
03 - Heat a skillet or grill over medium-high heat and add butter or neutral oil.
04 - Place patties in the skillet and cook for 2-3 minutes per side until well-browned and cooked through.
05 - Lay a slice of cheese on top of two patties during the final minute of cooking and allow to melt completely.
06 - Stack one cheese-topped patty with a plain patty, cheese side facing down, to create two double-patty stacks with cheese sandwiched between.
07 - Add optional toppings including pickles, tomato, grilled onion, and lettuce between the patties if desired.
08 - Serve immediately while hot and cheese is melted.