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Oklahoma Onion Smash Burger Recipe
Delilah Cooks

Oklahoma Onion Smash Burger Recipe

Oklahoma onion smash burger is thin, juicy, crispy, and packed with sweet onion flavor. This Oklahoma onion smash burger recipe uses simple ingredients and a hot skillet.
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Prep Time 10 minutes
Cook Time 15 minutes
Total Time 25 minutes
Servings: 4
Course: Main Course
Cuisine: American
Calories: 620
Ingredients Method Notes

Ingredients
  

  • 1 pound ground beef preferably 80/20
  • 2 large yellow onions very thinly sliced
  • 4 hamburger buns
  • 4 slices American cheese
  • 1 tablespoon butter
  • 1 tablespoon vegetable oil
  • 1 teaspoon salt
  • ½ teaspoon black pepper
  • ½ teaspoon garlic powder
  • ¼ cup mayonnaise
  • 2 tablespoons ketchup
  • 1 tablespoon yellow mustard
  • 1 tablespoon sweet pickle relish optional

Method
 

Cooking Instructions for Oklahoma Onion Smash Burger
    Slice the Onions
    1. Peel the onions and slice them very thinly. Thin slices cook quickly and become soft, sweet, and golden underneath the smashed beef patty.
    Prepare the Beef
    1. Divide the ground beef into four equal portions. Gently shape each portion into a loose ball without packing the meat too tightly.
    Mix the Burger Sauce
    1. Add mayonnaise, ketchup, mustard, and pickle relish to a small bowl. Stir everything together until smooth, then refrigerate until serving.
    Heat the Skillet
    1. Place a cast iron skillet over medium-high heat. Allow it to become very hot before adding the beef and onions.
    Add the Onions
    1. Add a small pile of sliced onions to the hot skillet. Spread each pile slightly so the onions cover the burger area.
    Add the Beef Ball
    1. Place one beef ball directly over the sliced onions. Work quickly because the hot skillet should immediately begin cooking the beef.
    Smash the Burger
    1. Press the beef firmly into the onions using a sturdy spatula. Smash until the patty becomes thin and the onions stick underneath.
    Season the Patty
    1. Sprinkle salt, black pepper, and garlic powder over the smashed patty. Season lightly because the onions and cheese also add flavor.
    Cook the First Side
    1. Cook the patty for about two to three minutes. Let the bottom develop a dark, crispy crust before flipping it carefully.
    Flip the Burger
    1. Slide your spatula underneath the patty and flip it quickly. Keep the onions attached to the burger during the flip.
    Add the Cheese
    1. Place one slice of American cheese over the hot patty. Allow it to melt completely while the second side finishes cooking.
    Toast the Buns
    1. Spread butter on the cut sides of the buns. Toast them in the skillet until lightly golden and warm.
    Assemble the Burger
    1. Spread the prepared sauce over the toasted bun. Add the cheesy onion patty, then cover it with the top bun.
    Serve Immediately
    1. Serve the Oklahoma onion smash burger while it is hot. Add pickles, extra sauce, or other toppings according to your preference.

    Notes

    • Use ground beef with enough fat for juicy burgers.
    • An 80/20 beef blend works especially well.
    • Slice the onions as thinly as possible.
    • Use a very hot cooking surface.
    • Do not press the burger after flipping.
    • Smash the beef only once.
    • Use a sturdy metal spatula for better pressure.
    • Keep the beef loose before smashing.
    • Avoid overworking the ground beef.
    • Cook the burgers in batches if necessary.
    • Do not overcrowd the skillet.
    • Use American cheese for excellent melting.
    • Toast the buns for better texture.
    • Serve the burger immediately after cooking.
    • Keep toppings simple to highlight the onions and beef.