Copycat In-N-Out Burger

@cheatdayeats In-N-Out or Shake Shack?! Tbh I love both but let’s make a Copycat In-N-Out Burger animal style Makes 2 double doubles: Caramelized Onions 1 tsp olive oil 1 large yellow onion, diced Sauce 1 Tbsp ketchup 3 Tbsp mayo 2 tsp sweet pickle relish ½ tsp sugar ½ tsp distilled white wine vinegar Burgers 10 oz 80/20 ground beef Salt, to taste Yellow mustard 4 slices American cheese 2 hamburger buns, toasted Dill pickle chips 2 thick tomato slices Iceberg lettuce -Start by adding the olive oil to a medium size pan over low heat, then add the onions and caramelize. This will take about 40-45 minutes, so you can prep these before you start cooking your burgers. -While the onions are cooking, prep the sauce by mixing together all the ingredients in a small bowl, then refrigerating until ready to use. -For the burgers, shape the ground beef into 4 equal balls, then flatten out into thin patties between two sheets of parchment paper. Season the patties with salt. In a medium size pan, start cooking on medium high heat for about 2-3 min until the bottom of the patty gets brown. Before flipping, add a drizzle of yellow mustard to each patty, then flip and top each patty with a slice of cheese and cook for another minute or until the burger is brown the whole way through ( or at an internal temperature of 160 °F) Stack one patty on top of another to create two double patties. -To build the burgers, spread sauce on the bottom buns and top with pickles, a tomato slice, lettuce, the patties, caramelized onions, and more sauce and finish with the top buns. -Enjoy!