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5 from 1 vote

In-n-Out Double Double Animal Style Burger Recipe

This incredible In-N-Out Double Double Animal Style Burger Recipe really hits the spot and is a tasty treat that can be easily made at home!
Prep Time30 minutes
Cook Time30 minutes
Servings: 2 Burgers

Ingredients

In-N-Out Sauce

  • 1/2 cup mayonnaise
  • 3 Tablespoons ketchup
  • 2 Tablespoons sweet pickle relish
  • 1 teaspoon sugar
  • 1 teaspoon distilled white vinegar
  • Salt and pepper to taste

Double Double Animal Style Burger

  • 1 pound 80/20 ground beef
  • 1 medium white or yellow onion, diced
  • 2 tablespoons unsalted butter, divided
  • 1-2 tsp neutral flavored oil
  • salt and pepper to taste
  • 4 tbsp yellow mustard
  • 4 slices American cheese
  • 2 large tomato slices
  • 2 brioche buns or hamburger buns
  • 4 iceberg lettuce leaves

Instructions

  • In a small mixing bowl, add all of the sauce ingredients. Whisk together until well combined. Set aside.
  • In a large skillet under medium heat, melt 1 tablespoon of butter and add the onions. Season with salt and sauté, stirring occasionally, until onions are softened and caramelized, about 10-12 minutes. Remove from heat and set aside.
  • Divide ground beef into 4 equal portions weighing 4 ounces (1/4 pound) and form into a ball. Place each ball of meat onto a piece of parchment paper and flatten into thin, circular patties. Season tops with salt and pepper to taste.
  • In the same skillet used to make caramelized onions, melt remaining butter over medium-high heat. Add brioche buns or hamburger buns and toast to golden brown. Remove from pan. Set aside until ready to use.
  • Drizzle some oil into skillet and add the patties seasoned side down. Season top of patties with salt and pepper and cook for 2-3 minutes or until patties starts to turn brown with crisp edges. Spread 1 tbsp of mustard on the raw side and then flip. Cook for 1-2 minutes and place a slice of cheese on each of the (4) patties. Cook for an additional minute to allow the cheese to melt. Remove from heat.
  • Assemble burger by first spreading some of the sauce on both halves of the toasted buns. Top the bottom bun with a tomato slice and 2 lettuce leaves. Stack two patties together and place on top of the lettuce. Spoon a generous amount of caramelized onions over patties and close burger with top half of the bun. Repeat with remaining patties, tomato slice, lettuce and buns.
  • Serve burgers as is or with regular or animal style fries. Enjoy!

Notes

  • To flatten patties into thin, circular patties, use a burger press or a large flat spatula. Alternatively, you can use your hands to flatten patties into desired thinness. 
  • Cook patties in batches if pan/skillet is not large enough. Avoid overcrowding the pan so that patties can cook properly. 
  • I highly recommend you use my Homemade Brioche Buns Recipe and In-N-Out Animal Style Fries Recipe with this burger recipe.