Go Back
Cheeseburger on a brioche bun on a white plate with other cheeseburgers in the background

Oklahoma Smash Burgers

Michele Wendt
Oklahoma Smash Burgers are juicy with crispy edges, smashed into razor-thin cut onions, sprinkled with burger seasoning and dripping with homemade secret sauce. The sauce has an edge and the onions flavor the meat just right!
Prep Time 30 minutes
Cook Time 6 minutes
Total Time 36 minutes
Course Dinner, lunch, Main Course
Cuisine American
Servings 4 burgers
Calories 607 kcal
Equipment
  • cast iron griddle or skillet If you don't have a cast iron, you can use any skillet you have. I would add a little vegetable oil to your skillet if using stainless steel, to prevent sticking.
  • metal spatula
  • measuring cups and spoons
  • small mixing bowl
  • small whisk
  • large, sharp knife
  • cutting board
  • parchment paper (optional)
Ingredients
  

For the burger sauce

  • 1/2 cup (115g) mayonnaise
  • 1/4 cup (58g) ketchup
  • 2 1/2 tablespoons mustard
  • 2 tablespoons sweet relish
  • 1/2 teaspoon salt
  • 1/4 teaspoon pepper
  • 2 teaspoons sugar
  • 1 tablespoon sriracha

For the burgers

  • 1 pound (453g) 80/20 ground beef
  • 4 hamburger buns I like brioche buns
  • burger sauce Spoon a healthy amount onto the bottom bun of each burger.
  • burger seasoning equal parts of seasoning salt, garlic powder and black pepper
  • 4 slices (80g) American cheese or any cheese you like
  • 2 cups (104g) white onions Cut as thin as you can get them
Instructions
 

For the burger sauce

  • Add mayonnaise, ketchup, mustard, sweet relish, sriracha, salt, pepper and sugar to a small mixing bowl.
  • Whisk ingredients together until smooth and creamy. Refrigerate until ready to use.

For the burgers

  • Mix 1 teaspoon of seasoning salt, garlic powder and black pepper and set aside.
  • (Not pictured) Slice onions as thin as you can get them with a large, sharp knife. Set aside.
  • Melt 1 tablespoon of butter on medium heat in a large cast iron skillet or griddle. If you don't have a cast iron skillet or griddle, you can still use a regular stainless steel or non-stick skillet.
    (This is optional. You do not have to toast your buns. Or you can toast them under your broiler if you want to.)
  • Cut open hamburger buns and place face-down in the buttered skillet.
  • Remove buns from skillet when toasted and set aside. Keep pan on medium for the burgers.
  • Add ground beef balls to pre-heated skillet.
    (If your cast iron is not seasoned, I would advise adding 1-2 tablespoons of vegetable oil to the skillet to prevent sticking. And if you're using stainless steel, you should add 1-2 tablespoons of oil to the skillet to prevent sticking. You should not need any for a non-stick skillet.)
  • Generously add sliced onions on top of each beef ball.
  • Place a piece of parchment paper over one burger at a time and smash with a metal spatula. Smash burger as thin as you can get it.
    (The parchment is optional, but I do find it to be easier so that the spatula doesn't stick to the meat while smashing.)
  • Sprinkle burger seasoning on top of each burger. Let burgers cook for 3-4 minutes.
  • Flip burgers and add more burger seasoning. Cook for another 1-2 minutes.
    (My skillet only fits two burgers. In between cooking, I scraped my skillet of any residue or anything that may have stuck and then wiped with a paper towel. Then I cooked my last two burgers.)
  • Add cheese to your burgers and let the cheese melt for a minute or two.
  • While your cheese is melting, add some burger sauce to the bottom bun.
  • Add your burger to the bun. This is the time you should add any other toppings you like on your burger like lettuce, tomato, pickles, etc. Because the burgers have sauce, I don't think they need anything else, but that's up to you.
  • Place your top bun on the burger and your perfect burger awaits!
  • Serve and enjoy!
Notes
Leftover burgers can be stored covered in the refrigerator for 3-4 days.
I do not recommend freezing, as the burgers are best after cooking.
Leftover burger sauce can be stored covered in the refrigerator for up to 1 week.
I do not recommend freezing the burger sauce.
Keyword Cheeseburgers, Hamburgers, Oklahoma, Oklahoma Smash Burgers, Onions, Smash Burgers, Summer recipes