These smash-style burgers are infused with caramelized onions and cooked in a skillet to crispy perfection. You'll want to try this Oklahoma onion burger "sooner" than later.
Ingredients
1 large white onion
1 pound ground beef
4 hamburger buns, split
1 tablespoon butter
salt and pepper
4 slices american cheese, optional
yellow mustard
dill pickle slices
optional toppings: lettuce leaves and sliced tomato
Directions
Using a mandolin, slice onion into paper-thin slices. Divide beef into 4 portions; gently shape each into a ball.
In a large cast-iron skillet or electric griddle over medium-high heat, melt butter. Place ground beef balls in the skillet. Season with salt and pepper. Top with a generous mound of onions. Using a cast-iron grill press or large metal spatula, flatten to about 1/4-inch thickness, pressing the onion into the beef. Cook until lightly browned and edges are crisp, 4-6 minutes.
Carefully turn patties so onion is on the bottom. Cook until onions are golden brown, 4-6 minutes. If desired, top each patty with cheese and cook until melted, 1-2 minutes longer. Remove from the heat. Serve on buns with mustard, pickles and if desired, lettuce and tomato.
