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In-N-Out-Style Onion Griddle Burger on a plate
Andrew Fowler

In-N-Out-Style Onion Griddle Burger

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Prep Time 20 minutes
Cook Time 25 minutes
Total Time 45 minutes
Servings: 4
Ingredients Method

Ingredients
  

  • 1 1/2 lbs 80-percent lean ground beef
  • 1 large yellow onion finely diced
  • 1 tbsp neutral oil
  • 2 tbsp yellow mustard
  • 1 tsp kosher salt
  • 4 slices American cheese
  • 4 hamburger buns
  • 1/4 cup mayonnaise
  • 2 tbsp ketchup
  • 1 tbsp dill pickle relish

Method
 

  1. Cook onion in oil on a griddle over medium heat 12 to 15 minutes until soft and deeply golden. Transfer to a bowl.
  2. Mix mayonnaise, ketchup, and relish; spread on cut buns.
  3. Divide beef into 4 loose balls on a hot griddle. Smash to 1/3-inch thickness; season with salt.
  4. Cook 2 minutes. Spread mustard on raw tops, flip, and cook to 160°F.
  5. Add cheese and onions; cover 30 seconds until cheese softens. Place patties in prepared buns; close.