Description
Oklahoma Onion Smash Burgers are a classic American diner-style favorite featuring thinly sliced grilled onions pressed into juicy smashed beef patties, topped with melted American cheese and served on toasted buns. These flavorful burgers offer a delicious combination of crispy edges, caramelized onions, and savory seasonings, perfect for an easy stovetop meal.
Ingredients
Main Ingredients
- 1 lb ground beef (80/20)
- 1 large yellow onion, thinly sliced
- 4 hamburger buns
- 4 slices American cheese
- 1 tablespoon vegetable oil
- Kosher salt and black pepper to taste
- 2 tablespoons unsalted butter (optional, for toasting buns)
Optional Toppings
- Pickles
- Mustard
- Ketchup
- Mayonnaise
Instructions
- Prepare the beef balls: Divide the ground beef into four equal portions and loosely roll each into balls, being careful not to pack them tightly, to ensure a tender, juicy burger.
- Slice the onion: Thinly slice one large yellow onion and set aside to use during cooking.
- Heat the skillet: Place a cast iron skillet or griddle over medium-high heat and add 1 tablespoon vegetable oil. Allow the pan to become hot before cooking the burgers.
- Form and smash the burgers: Place one beef ball on the hot skillet and pile a generous amount of the thin onion slices on top. Using a sturdy spatula, press down firmly to smash the beef and onions into a thin patty, pressing the onions into the meat.
- Season and cook first side: Season the smashed burger with kosher salt and black pepper. Cook for 2-3 minutes without moving, allowing the edges to get crisp and brown.
- Flip and cook second side: Flip the burger so the onions are underneath. Cook for an additional 1-2 minutes until the burger is cooked through and the onions are softened and caramelized.
- Add cheese and melt: Place a slice of American cheese on top of the patty. Cover the skillet briefly to allow the cheese to melt evenly.
- Toast the buns: Optionally, toast the hamburger buns in 2 tablespoons of unsalted butter in a separate pan or the same skillet until golden brown.
- Assemble the burgers: Place the cheesy patty on the toasted bun bottoms and add optional toppings such as pickles, mustard, ketchup, or mayonnaise. Top with bun lids and serve immediately while hot.
Notes
- Use a cast iron skillet for the best sear and flavor development.
- Thinner onion slices caramelize better and meld nicely with the beef.
- Classic toppings include American cheese, pickles, and mustard, but feel free to customize with your favorites.
- Do not press the beef too tightly when forming patties to maintain juiciness.
- Covering the patties briefly after adding cheese helps achieve perfect melt without overcooking.
