This Copycat In and Out Burger Animal Style Recipe is easy to make at home. Enjoy caramelized onions, sweet pickles and a special sauce. It all comes together for a delicious meal.

In and out  burger animal style ready to eat.

Copycat In and Out Burger Animal Style

If you love ordering this popular menu item, this recipe is a must try. We are going to show you how simple it is to make an animal style burger at home. This copycat recipe is so delicious and a favorite fast food menu item.

What is animal style?

Animal style refers to the toppings on the burger. This type of burger is fried in mustard and topped with lots of cheese, grilled onions and extra spread. It is super messy but oh so delicious.

This can also be ordered double double animal style which simply means that it has a double patty with extra toppings.

For those history buffs that might find this interesting, the first Animal Style Burger was created in 1961.

As you can imagine, this is one serious burger! The sauce is really delicious. Some say it taste similar to thousand island dressing but it isn’t the same.

Why does In-N-Out call it animal style?

This style is called the “animal” method of preparation because the beef patty is mustard fried, topped with grilled onions and a generous portion of special sauce. It also has 2 slices of cheese for lots of ooey gooey flavor.

This secret menu item isn’t so secret and is frequently requested. Many people like to order animal style fries to go along with this burger.

Throw in a root beer and you are set for a great meal.

Ingredients for In and out  burger animal style.

Ingredients: 

FOR THE BURGER: 

  • Ground Beef 80/20
  • Olive Oil  
  • Salt and Pepper
  • Mustard 
  • Butter 
  • White Onion, chopped 
  • American Cheese 
  • Large Tomato, sliced 
  • Iceberg Lettuce Leaves 
  • Hamburger Buns 

THE SAUCE: 

  • Mayonnaise 
  • Ketchup 
  • Sweet Pickle Relish 
  • White Vinegar 
In and out  burger animal style ready to eat.

How to make In and out burger animal style:

  • Step 1 – Make the sauce. Mix the sauce ingredients together in a small bowl.  
  • Step 2 – Cook the onions. Melt the butter in a large skillet (or cast iron pan) over medium high heat.  Then top the melted butter with the chopped onions. 

    Sauté the onions in the butter until they are caramelized (3-5 minutes).  Remove the onions from the skillet and set aside.  
  • Step 3 – Make the patties. Form the ground beef into 4 balls approximately ¼ pound each.  
  • Step 4 – Place oil in the pan. Drizzle the olive oil on a skillet, cast iron pan or griddle over medium high heat.  
  • Step 5 – Toast the hamburger buns. Place the buns on the preheated pan for 2 minutes to toast them and then set them aside while you prepare the beef.
  • Step 6 – Cook the burgers. Then place the beef balls on the pan. Then top each one with a piece on parchment paper and firmly press down to smash the beef into a thin patty with either a burger press or a large spatula and then discard the parchment paper. Season the patties with salt and pepper. 
  • Step 7 – Cook the patties for 2 minutes. Cook until the juices in the beef start to raise to the top and the color starts to change. While the patties are cooking, top each of the patties with 1 tablespoon of mustard on the raw side. 

    Then scrape under the patty to get under the caramelized parts and flip the patty. Once flipped, do not smash down the patties again.
  • Step 8 – Add the cheese. Cook for 1 more minute and place 2 pieces of cheese on each of the patties.  Cook for 1 more minute to allow the cheese to melt.  
  • Step 9 – Then it’s time to assemble your burgers. Spread the sauce on the top and bottom of the bun. Then top the bottom bun with the lettuce, tomatoes, patty and sauté onions. 

    Then the top bun.  Then the burgers are ready to enjoy!
In and out  burger animal style ready to eat.

How to store leftovers:

These burgers are best served fresh, but you can store the leftover patties in an airtight container for up to 1 week. 

I would recommend storing the patties separately from topping and buns.

In and out  burger animal style ready to eat.

What to serve with in and out burgers:

Enjoy this easy copycat recipe.

It is so easy to prepare and absolutely delicious.

In and out  burger animal style ready to eat.

Print this In and out burger animal style recipe:

Copycat In-N-Out Animal Style Burger

5 from 5 votes
This Copycat In and Out Burger Animal Style Recipe is easy to make at home. Enjoy caramelized onions, sweet pickles and a special sauce. It all comes together for a delicious meal.
Prep Time 10 mins
Cook Time 15 mins
Total Time 25 mins
Servings 4
Cuisine American
Course Main Course
Calories 819
Author Eating on a Dime

Ingredients

  • 1 pound Ground Beef 80/20
  • 2 tsp Olive Oil
  • 1 teaspoon Salt
  • ½ teaspoon Black Pepper
  • 4 tablespoons Mustard
  • 1 tablespoon Butter
  • 1 White Onion chopped
  • 8 slices American Cheese
  • 1 Large Tomato sliced
  • 8 Iceberg Lettuce Leaves
  • 4 Hamburger Buns

FOR THE SAUCE:

  • 1/2 cup Mayonnaise
  • ¼ cup Ketchup
  • 2 Tablespoon Sweet Pickle Relish
  • 2 Tablespoon White Vinegar

Instructions

  • Mix the sauce ingredients together in a small bowl.
  • Melt the butter in a large skillet (or cast iron pan) over medium high heat.  Then top the melted butter with the chopped onions.  Sauté the onions in the butter until they are caramelized (3-5 minutes).  Remove the onions from the skillet and set aside.
  • Form the ground beef into 4 balls approximately ¼ pound each.
  • Drizzle the olive oil on a skillet, cast iron pan or griddle over medium high heat.
  • Place the buns on the preheated pan for 2 minutes to toast them and then set them aside while you prepare the beef.
  • Then place the beef balls on the pan. Then top each one with a piece on parchment paper and firmly press down to smash the beef into a thin patty with either a burger press or a large spatula and then discard the parchment paper. Season the patties with salt and pepper.
  • Cook the patties for 2 minutes until the juices in the beef start to raise to the top and the color starts to change. While the patties are cooking, top each of the patties with 1 tablespoon of mustard on the raw side.  Then scrape under the patty to get under the caramelized parts and flip the patty. Once flipped, do not smash down the patties again. Cook for 1 more minute and place 2 pieces of cheese on each of the patties.  Cook for 1 more minute to allow the cheese to melt.
  • Then it’s time to assemble your burgers. Spread the sauce on the top and bottom of the bun. Then top the bottom bun with the lettuce, tomatoes, patty and sauté onions.  Then the top bun.
  • Then the burgers are ready to enjoy!

Recipe Notes

These burgers are best served fresh, but you can store the leftover patties in an airtight container for up to 1 week. 

Nutrition Facts

Calories 819kcal, Carbohydrates 30g, Protein 31g, Fat 64g, Saturated Fat 22g, Polyunsaturated Fat 14g, Monounsaturated Fat 21g, Trans Fat 2g, Cholesterol 142mg, Sodium 1926mg, Potassium 574mg, Fiber 3g, Sugar 11g, Vitamin A 1020IU, Vitamin C 7mg, Calcium 513mg, Iron 4mg

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In and out  burger animal style ready to eat.

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This Copycat In and Out Burger Animal Style Recipe is easy to make at home. Enjoy caramelized onions, sweet pickles and a special sauce. Delicious and easy to make copycat recipe. No need to find the closest restaurant when you can make it at home. #eatingonadime #innoutburger #animalstyleburger
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Hi, I’m Carrie. Welcome to Eating on a Dime!

I’m on a mission to help you cook delicious meals without busting your budget. Together we are going to cook real food… for real families.

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