Step 1

Preheat your gas griddle or your cast-iron skillet over medium-high heat.

Step 2

Slice the onion, and set aside. Place the oil onto the griddle and let heat up. Toss the onions on and cook, turning frequently, until the onions are cooked and browned and tender (but not mushy). Set aside and scrape off the griddle.

Step 3

Portion the ground beef into four patties that are elongated. You'll be smashing them down when they get on the griddle for that perfect diner-style crust. You want them in the shape of a fat hot dog, essentially.

Step 4

Season the patties with salt, pepper, and garlic powder. Place onto the grill and smash down with a press or a sturdy griddle spatula.

Step 5

Cook for 2-3 minutes on one side, or until there is a dark brown crust.

Step 6

Flip once, and top with cheese. Cover with a melting lid (see recommended products below) and let the cheese melt.

Step 7

Lightly toast your bread, and place the patty on top. Serve hot!