Add the ground beef, Worcestershire sauce, and garlic powder to a bowl. Mix until combined, then portion into 8 two-ounce balls.

Heat a cast iron skillet or flat top grill over high heat until very hot.

Place the beef balls onto the hot surface and smash them flat, sprinkling with salt and pepper as you do. Allow to cook until the edges brown, about 45-60 seconds.

Flip each patty, season again lightly, and place a slice of cheese on top. Let the cheese melt while the burgers finish cooking.

After cooking, stack two patties together to form four double burgers.

Remove the double patties from the heat and place them on the toasted buns. Top with your choice of lettuce, tomato, pickles, onion, and sauce.

Serve immediately.