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Oklahoma onion burger
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5 from 2 votes

Oklahoma Onion Burger

The Oklahoma onion burger is a griddle smashed burger with crispy and caramelized onion cooked right into the patty. It's the only burger you'll want to eat, from here on out.
Prep Time20 minutes
Cook Time5 minutes
Course: Main Course, Sandwich
Cuisine: American
Keyword: burger, cheeseburger, hamburger
Servings: 4
Calories: 544kcal

Equipment

Ingredients

  • 1 lb 80/20 ground beef
  • 4 slices American cheese
  • 4 brioche hamburger buns
  • 1 medium yellow onion
  • 1/2 tsp kosher salt
  • 1/4 tsp black pepper
  • 2 Tb mayonnaise

Instructions

  • Using a mandoline at it's finest setting, slice the onion into very thin slices. Sprinkle them with a little bit of salt and allow them to sit for about 15 minutes for the moisture to pull out of the onions. Following that rest, pick up the onions and squeeze any additional moisture out of them over the sink. Return the thinly sliced onions to a dry bowl.
  • While the griddle is preheating, form beef into 1/4 pound balls.
  • Drop the 4 balls of beef (spaced out) on the hot flat top and begin smashing them as thin as you can using the burger press. Pile a handful of onions on top of the thin patties and season with kosher salt and pepper. Leave for about 3 minutes to get nicely seared on the bottom.
  • Carefully flip the burgers over using a metal spatula, now with onions on the hot surface and the burger on top of the onion. Top each burger with a slice of American Cheese.
  • Set the top bun on top of the cheese and place the bottom bun on top of the top bun, allowing both buns to steam from the burger and onions cooking below.
  • After about 2-3 more minutes, transfer the bottom bun to your plate, followed by the onion-burger-cheese-top bun that is already built on the diner grill.

Notes

We like our Oklahoma Onion burgers super simple with only a squeeze of Japanese mayo for a condiment.
However, you do you! If you want the works and add bacon, tomato, lettuce, pickles, ketchup, yellow mustard, knock yourself out!

Nutrition

Calories: 544kcal | Carbohydrates: 25g | Protein: 28g | Fat: 36g | Saturated Fat: 14g | Polyunsaturated Fat: 5g | Monounsaturated Fat: 13g | Trans Fat: 2g | Cholesterol: 104mg | Sodium: 978mg | Potassium: 432mg | Fiber: 1g | Sugar: 5g | Vitamin A: 205IU | Vitamin C: 3mg | Calcium: 322mg | Iron: 4mg