Preheat your grill or cast-iron skillet over medium-high heat for about 5 minutes.

While the cooking surface heats, form ground beef into four loose balls, about 4 ounces each.

Smash each beef ball down to about half an inch thickness once placed on the heat. Cook for 2 minutes without moving them.

Season the top of each patty with salt and pepper, flip carefully, and place a slice of cheese on top. Cover to melt cheese.

Toast the cut burger buns face down on the grill or in another skillet for 1-2 minutes until golden brown.

Spread the secret sauce on the bottom half of each toasted bun, add a cheesy patty, additional toppings if desired, and serve warm.