In-N-Out Copycat Animal Style Fries

 An easy In-N-Out Copycat Animal Style Fries recipe of french fries topped with American cheese slices, caramelized onions and homemade special sauce.

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I recently took a trip to LA for some very important business — *whisper screams* BTS’ Permission To Dance concert! (I know! It still feels like it was a feverish dream). The first thing I sought out after exiting the airport was a good old order of Animal Style fries from In-N-Out to satisfy my hungry self. Easy to say, I devoured mine within minutes.

After posting the recipe for Spicy Crispy Chicken Burger/Sandwich that’s inspired by KFC’s Zinger Burger/Sandwich, a few of my followers on Instagram requested for more copycat recipes. So I thought this would be a great follow up to that!

Animal Style Fries With Homemade Sauce

What exactly is this not-so-secret menu option from In-N-Out? An order of french fries topped with American cheese slices and caramelized onions, then drenched in special sauce.

The creamy special sauce in question has a mouthwatering tangy and sweet flavor. To recreate that, I used a combination of mayonnaise, ketchup, rice vinegar, sweet relish and sugar. I personally like to put in a bit of chili flakes to add a bit of heat, but that’s totally optional.

Ingredients You’ll Need

(For full ingredient measurements, please proceed to the recipe card below.)
  • In-N-Out Inspired Special Sauce
  • Mayonnaise
  • Ketchup
  • Rice vinegar or white vinegar
  • Sweet relish
  • Sugar
  • Chili flakes (optional)
  • Main Ingredients
  • Frozen fries
  • Cheddar cheese/American cheese
  • Onions 
  • Butter
  • Neutral oil
  • Salt

How To Make In-N-Out Copycat Animal Style Fries

  • Melt butter in a pan over medium low heat and pour in neutral oil.
  • Add the minced onions and salt to the pan.
  • Stir every few minutes until the onions caramelize. If the onions look like its burning, turn down the heat. This will take at least 30 minutes or longer.
  • Mix all the ingredients for the sauce and set aside.
  • Bake/Fry the frozen fries per the package instructions.
  • Once the fries are cooked, add grated cheddar cheese or sliced American cheese on top and broil for 3-5 minutes or until the cheese melts.
  • Once the cheese melts, add the caramelized onions and pour the sauce on top and enjoy!

Notes For In-N-Out Copycat Animal Style Fries

  • Onions – It takes at least 30 minutes on medium low/low heat for the onions to caramelize into the sweet, dark golden perfection. If it seems like the onions are burning, turn down the heat a little bit.
  • Chili flakes – The In-N-Out sauce doesn’t use chili flakes but I added it in for some heat. It’s optional and up to your preference.
  • American cheese slices – In-N-Out uses American cheese slices. I sometimes like to use shredded cheddar. Either one will work.

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