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–+ servings
An Oklahoma fried onion burger with a thin browned patty and a tangle of fried onions on a toasted bun

Oklahoma Fried Onion Burgers

Thin smash burgers with very thinly sliced raw onion pressed into the beef and fried against the skillet. Makes four.
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Prep Time 10 minutes
Cook Time 12 minutes
Total Time 22 minutes
Course Main Course
Cuisine American
Servings 4 burgers
Calories 483 kcal

Ingredients
  

  • 1 pound ground beef 80/20; divide into four balls
  • 4 teaspoons avocado oil use 1 teaspoon per burger when cooking in batches
  • 1 sweet onion large, peeled and very thinly sliced
  • 4 hamburger buns
  • salt to taste
  • black pepper freshly cracked, to taste

Instructions
 

  • Divide the ground beef into four equal balls. Have the very thinly sliced onion ready.
  • Add the oil to a large cast-iron skillet or griddle, using 1 teaspoon per burger if working in batches. Space the beef balls 3 to 4 inches apart. Press each to about 1/4 to 1/2 inch thick with a burger press, two oiled spatulas, or a spatula and parchment paper. Immediately season with salt and pepper, spread the onion over the patties, and lightly salt the onion.
  • Cook for 90 seconds, then flip so the onions are against the cooking surface. Cook until the beef and onions are well browned and a food thermometer inserted into the ground beef reads 160°F. Do not rely on the 90 seconds per side to tell you the burger is done.
  • After flipping, stack the bun halves on the burgers for 20 to 30 seconds to steam them. Remove the buns and toast them in the pan while the burgers finish cooking.
  • Transfer each burger to a bottom bun, add its top bun, and serve.

Notes

Check the ground beef with a food thermometer: 160°F. Optional toppings are American cheese, pickle slices and yellow mustard.

Nutrition

Serving: 1servingCalories: 483kcalCarbohydrates: 28.5gProtein: 24.8gFat: 29.4gSodium: 330mgFiber: 1.8gSugar: 4.6g
Keyword fried onion burger recipe, oklahoma fried onion burgers, oklahoma onion burger, oklahoma smash burgers, onion smash burgers