Classic Patty Melt

Season ground beef with salt and pepper and divide into 3 equal-sized balls.

Shape each ball as close as possible to the shape of the bread.

Make an indentation in the center of each patty with your thumb.

Melt butter in a skillet over medium heat and cook onion until soft and translucent, 5 to 8 minutes.

Remove from the skillet and divide into 3 equal portions.

Place beef patties into the same skillet and cook until desired doneness, 3 to 5 minutes per side.

Meanwhile, spread 1 teaspoons mayonnaise on one side of each slice of bread.

Place bread mayonnaise side-down in the skillet.

Top with 1 slice of cheese, 1 beef patty, 1/3 of the onions, a second slice of cheese, and another slice of bread, mayonnaise side up.

Cook bread until golden brown and cheese has started to melt, 3 to 4 minutes.

Flip each sandwich over and cook an additional 3 to 4 minutes.