01 - Gently combine ground beef with salt, black pepper, and Worcestershire sauce if using, taking care not to overmix.
02 - Divide the beef mixture into four equal portions and shape each into a patty approximately 3/4 inch thick, creating a slight indentation in the center.
03 - Heat a grill or skillet over medium-high heat until hot.
04 - Place patties on the grill or skillet and cook for 3 to 4 minutes per side for medium doneness. If using cheese, place a slice on each patty during the last minute, cover to melt.
05 - While patties cook, spread butter on cut sides of buns and toast face-down on the grill or skillet until golden brown.
06 - Spread mayonnaise and ketchup on buns, layer lettuce, tomato, onion, and pickles on the bottom bun, top with hot patty, and close with the top bun.
07 - Serve immediately with preferred side dishes.