Fried onion burgers will be the hit of the cookout. These smashed burgers are grilled to perfection and topped with grilled onions and cheese. Learn how to make Authentic Oklahoma Fried onion burgers.
Divide the beef into 4 balls that are approximately 4 oz each. Place them in the refrigerator until you are ready to cook them.
Preheat a griddle or cast iron skillet over medium high heat (approximately 400 degrees F).
Butter the buns and place them on the griddle (or skillet) for 2 minutes to toast them and then set them aside while you prepare the beef.
Evenly place the sliced onions into 4 piles on the griddle (or skillet). Place the beef on top of each onion pile. Then top each one with a piece on parchment paper and then firmly press down to smash the beef into a thin patty with either a burger press or a large spatula and then discard the parchment paper. Season with the patties with garlic salt and the pepper.
Cook the patties for 2-4 minutes until the juices in the beef start to raise to the top and the color starts to change. Then scrape under the patty to get under all the onions and flip the patty. Once flipped, smash down each patty again with the burger press or spatula so that the juices from the patties will drip down into the onions to give them the best flavor. Cook for 1 more minute. Then place a piece of cheese on each of the patties to melt.
Then it's time to assemble your burgers. Carefully remove the patties from the griddle once the cheese is melted and place them on the buttered buns.
Then the fried onions burgers are ready to enjoy!
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Notes
*When preparing the balls with the beef, do not pack them together. Loosely roll them into balls so that they are easier to smash. *You can use 90/10 or 93/7 for this recipe to lower the fat content in this recipe, but we think that the 80/20 gives the best flavor to this recipe.