In-N-Out is known for its simple menu full of burgers and fries. However, what makes this chain stand out compared to its fast-food competitors is its Animal Style menu items. Animal Style is a popular secret menu option that refers to a special way of preparing burgers and the extra toppings added to fries. If you don’t have an In-N-Out near you, you can easily make Animal Style fries right in the comfort of your own home.

In-N-Out Animal Style Fries Ingredients
- Frozen fries: I am using Kirklands
- 1 whole onion, diced
- 2 slices of American cheese
- ½ cup mayonnaise
- 3 tbsp ketchup
- 1 tsp of mustard or Dijon mustard
- 1 tsp white vinegar
- 2 tbsp chopped sweet pickles
- Oil (for cooking)
- Water (as needed)
In-N-Out Animal Style Fries Instructions
Heat a pan over medium low heat and drizzle with oil.
Add the diced onions and cook for about 30 minutes, stirring occasionally.

Add small amounts of water as needed to prevent burning and help soften the onions.
Once caramelized, set aside.

Air fry or deep fry the frozen fries until crispy.
Transfer them to an oven-safe dish.
Place the American cheese slices on top of the hot fries.

Bake at 300°F for a few minutes, just until the cheese melts.
In a bowl, mix together mayonnaise, ketchup, mustard, white vinegar, and chopped sweet pickles until well combined.

Drizzle the Animal Style sauce over the cheesy fries.

Top with caramelized onions.

Serve immediately and enjoy your homemade In-N-Out Animal Style Fries!

Caramelize Onions Tips
- Avoid cooking on high heat, as it can burn the onions.
- Stir every few minutes to prevent burning.
- If the onions start to dry out, add a splash of water to keep them moist.
- Avoid using nonstick pans.
In-N-Out Animal Style Fries
Ingredients
- Frozen fries
- 1 whole onion diced
- 2 slices American cheese
- ½ cup mayonnaise
- 3 tbsp ketchup
- 1 tsp mustard or Dijon mustard
- 1 tsp white vinegar
- 2 tbsp chopped sweet pickles
- Oil for cooking
- Water as needed
Instructions
- Heat a pan over medium low heat and drizzle with oil.
- Add the diced onions and cook for about 30 minutes, stirring occasionally.
- Add small amounts of water as needed to prevent burning and help soften the onions.
- Once caramelized, set aside.
- Air fry or deep fry the frozen fries until crispy.
- Transfer them to an oven-safe dish.
- Place the American cheese slices on top of the hot fries.
- Bake at 300°F for a few minutes, just until the cheese melts.
- In a bowl, mix together mayonnaise, ketchup, mustard, white vinegar, and chopped sweet pickles until well combined.
- Drizzle the Animal Style sauce over the cheesy fries.
- Top with caramelized onions.
- Serve immediately and enjoy your homemade In-N-Out Animal Style Fries!
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If you enjoyed this animal style fries, you might also like this crispy potato pillow recipe.
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