At a recent gathering, I overheard a friend excitedly raving about the joy of recreating their favorite fast food indulgences at home. It sparked an idea that took me straight back to those heavenly In-N-Out Copycat Animal Style Fries. Crispy on the outside, warm and gooey cheese on top, mixed with sweet caramelized onions and tangy homemade sauce – what’s not to love? What I adore about this recipe is not just its swift 35-minute prep time, but also how it turns a simple snack into the star of any gathering or cozy movie night. With minimal ingredients and maximum flavor, these fries allow you to experience comfort food bliss right in your own kitchen. Are you ready to whip up a batch and impress your friends?

Why Are These Copycat Animal Style Fries Unforgettable?
Irresistible flavor: The combination of gooey cheese and sweet caramelized onions creates a mouthwatering profile that rivals your favorite fast-food joint.
Quick prep: With just 35 minutes of cooking time, you can serve comfort food that impresses your guests and satisfies all cravings.
Versatile indulgence: Customize these fries with toppings like crumbled bacon or spicy pepper jack cheese for a personal twist.
Crowd-pleaser: Perfect for movie nights or parties, everyone will be asking for seconds! Don’t forget to check out my tips on making the special sauce in advance to elevate your dish.
Easy to make: With simple ingredients found in your pantry, there’s no need for fancy cooking skills. Just follow the straightforward steps to deliciousness!
Copycat Animal Style Fries Ingredients
For the Sauce
- Mayonnaise – Serves as the creamy base; substitute Greek yogurt for a lighter option.
- Ketchup – Adds the perfect touch of sweetness and acidity; no substitutions needed.
- Rice Vinegar (or White Vinegar) – Delivers a tangy kick; apple cider vinegar works nicely if you prefer a different flavor.
- Sweet Relish – Brings sweetness and a delightful texture; feel free to use chopped pickles as an alternative.
- Sugar – Balances the sauce’s tanginess; you can omit it if you’re monitoring your sugar intake.
- Chili Flakes (optional) – Introduces a hint of heat; skip them for a milder flavor.
For the Fries
- Frozen Fries (½ bag) – The star ingredient for crunchiness; shoestring or crinkle-cut fries offer the best results.
- Cheddar Cheese or American Cheese – Melts beautifully on top of the fries; swap for mozzarella if you’d like a different texture.
- 2 Onions (diced) – Adds a sweet touch once caramelized; no substitutions suggested.
- Butter (2 tbsp) – Richness for caramelizing onions; you can use olive oil to keep it dairy-free.
- Neutral Oil (1 tbsp) – Helps with frying and caramelizing; vegetable or canola oil works perfectly here.
- Salt (½ tsp) – Enhances the overall flavor; feel free to adjust according to your taste.
Dive into this delicious recipe for Copycat Animal Style Fries and make snack time unforgettable!
Step-By-Step Instructions for Copycat Animal Style Fries
Step 1: Caramelize the Onions
In a large skillet, melt 2 tablespoons of butter over medium-low heat. Once melted, add 1 tablespoon of neutral oil and the diced onions, seasoning with ½ teaspoon of salt. Stir occasionally for about 30 minutes until the onions are soft and beautifully golden brown, caramelizing to create that sweet flavor perfect for your Copycat Animal Style Fries.
Step 2: Make the Special Sauce
While the onions are caramelizing, grab a mixing bowl and whisk together ½ cup of mayonnaise, 2 tablespoons of ketchup, 1 tablespoon of rice vinegar, 2 tablespoons of sweet relish, 1 teaspoon of sugar, and optional chili flakes. Mix until everything is well combined, and then set this delightful special sauce aside to allow the flavors to meld as you prepare the fries.
Step 3: Prepare the Fries
Preheat your oven or fryer according to the frozen fries package instructions, ensuring you achieve crispy, golden perfection. Bake or fry the fries for approximately 15–20 minutes, or until they are golden brown and have reached that irresistible crunch, which is essential for your Copycat Animal Style Fries.
Step 4: Melt the Cheese
Once the fries are crispy, transfer them to a baking sheet and sprinkle them generously with 1 cup of shredded cheddar cheese or American cheese. Place the baking sheet under the broiler for about 3–5 minutes, watching closely until the cheese is melted and bubbly. This is the key step to achieving the ooey-gooey texture that makes these fries so indulgent.
Step 5: Assemble the Fries
When the cheese has melted, remove the fries from the oven and immediately top them with the sweet caramelized onions you prepared earlier. Drizzle the special sauce generously over the entire dish, ensuring every fry is coated in creamy goodness. Serve your Copycat Animal Style Fries hot, and prepare for a delicious experience that rivals your favorite fast food!

Copycat Animal Style Fries Variations
Feel free to let your creativity run wild as you customize these fries to suit your taste buds!
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Extra Crispy: Double-fry the frozen fries for an extra crunch that takes your Copycat Animal Style Fries to a whole new level. The texture will be addictively crisp and perfect for soaking up all those indulgent toppings!
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Sweet Heat: Toss in some diced jalapeños with the caramelized onions for a spicy twist. The heat from the jalapeños pairs beautifully with the sweet onions, adding depth and excitement to every bite.
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Vegan Twist: Replace the cheese with a plant-based alternative and use vegan mayonnaise for the special sauce. This keeps the flavors intact while catering to a vegan diet without sacrificing the indulgence.
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Cheese Showdown: Experiment with toppings like gouda or smoked cheddar for a gourmet flair. Each cheese brings forth unique flavors that elevate your fries from fast food to a culinary masterpiece.
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Mushroom Magic: Sauté sliced mushrooms along with the onions for added earthiness and moisture. The umami flavor of the mushrooms will enhance the overall taste of your Copycat Animal Style Fries.
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Truffle Infusion: Drizzle some truffle oil over the assembled fries for an elegant twist. The luxurious aroma will captivate your senses and turn a simple dish into a gourmet delight.
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Bacon Bliss: Sprinkle crumbled bacon over the top for that beloved smoky flavor. The crispy little bits add a delightful crunch and flavor contrast to the rich toppings.
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Mediterranean Influence: Swap the sauce for tzatziki and top with feta cheese and olives for a fresh, Mediterranean-inspired version. The coolness of tzatziki contrasts wonderfully with the warm, crispy fries.
Feel free to explore any of these ideas for a fun twist on your Copycat Animal Style Fries. Let your taste buds guide you, and enjoy every delightful bite!
How to Store and Freeze Copycat Animal Style Fries
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Fridge: Store leftover Copycat Animal Style Fries in an airtight container for up to 2 days. Reheat in the oven at 350°F (175°C) for 10-15 minutes for a crispy texture.
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Freezer: If you need to freeze them, layer the fries on a baking sheet and freeze until solid. Then transfer to a freezer bag for up to 1 month.
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Reheating: For the best results, reheat from frozen in the oven at 425°F (220°C) for about 20 minutes or until heated through and crispy.
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Avoid Microwaving: It’s best to avoid the microwave, as it can make the fries soggy instead of restoring their delightful crunch.
Make Ahead Options
These Copycat Animal Style Fries are a fantastic solution for busy home cooks looking to save time in the kitchen! You can prepare the special sauce up to 3 days in advance. Simply whisk together the mayonnaise, ketchup, vinegar, relish, sugar, and optional chili flakes, then refrigerate it in an airtight container; the flavors will deepen overnight for a tastier experience! For the onions, caramelize them ahead of time and store in the fridge for up to 2 days. When you’re ready to enjoy your fries, fry or bake the frozen fries as per the package instructions, top them with cheese, and broil until melted. Finish by adding the onions and sauce, and you’ll have delightful Copycat Animal Style Fries without the last-minute rush!
What to Serve with Copycat Animal Style Fries
Imagine a cozy evening where smoky, cheesy goodness and crispy indulgence take center stage on your plate.
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Creamy Coleslaw: A crunchy and tangy contrast that balances the richness of the fries beautifully. Its freshness brings a lightness to your meal.
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Buttermilk Fried Chicken: Juicy, crispy chicken adds a hearty component that complements the comforting fries. The smokiness from the chicken pairs perfectly with the lingering flavors of the special sauce.
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Garlic Butter Breadsticks: Soft, pillowy breadsticks brushed with garlic-infused butter provide a delightful dippable option alongside the fries. Each bite melts in your mouth, making for an indulgent experience.
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Spicy Jalapeño Poppers: For a bit of heat, these cheesy appetizers offer a playful kick that complements the savory fries wonderfully. The creaminess from the cheese inside them harmonizes well with the rich toppings.
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Fresh Garden Salad: A light, crisp salad with a zesty vinaigrette can cut through the richness of the fries and add a refreshing element to your meal. Think tomatoes, cucumbers, and greens—but don’t forget the crunch!
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Craft Beer: A cold, crisp lager or an aromatic IPA can elevate your plate, providing a refreshing counterpoint to the comforting, savory elements of the meal.
Treat your taste buds to a delightful combination that transforms your Copycat Animal Style Fries into an unforgettable feast!
Expert Tips for Copycat Animal Style Fries
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Perfect Caramelization: Ensure you’re cooking the onions on low heat and stir them infrequently for the best caramelization without burning.
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Cheese Choice: Use American cheese for that classic In-N-Out flavor or mix in cheddar for a more robust taste.
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Make It Ahead: Prepare the special sauce a day in advance—allowing it to marinate increases its flavor, making your Copycat Animal Style Fries even better!
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Crispy Fries: Aim for shoestring or crinkle-cut frozen fries for optimal crunch; fry or bake until golden for the best texture.
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Customize Toppings: Don’t hesitate to enhance your dish by adding crispy bacon bits or jalapeños for an extra kick; make these fries truly yours!

Copycat Animal Style Fries Recipe FAQs
What type of fries should I use for the best results?
For the ultimate Copycat Animal Style Fries experience, I recommend using shoestring or crinkle-cut frozen fries. These types provide the perfect balance of crunch and soft interior. Follow the package instructions for baking or frying until they reach a golden brown deliciousness!
How should I store leftover Copycat Animal Style Fries?
Leftover fries can be stored in an airtight container in the fridge for up to 2 days. To maintain their crispy texture, reheat them in the oven at 350°F (175°C) for about 10-15 minutes. This way, they regain their delightful crunch!
Can I freeze the Copycat Animal Style Fries?
Absolutely! To freeze, spread the fries out on a baking sheet in a single layer and freeze until solid. Then, transfer them into a freezer-safe bag or container. They will keep well for up to 1 month. When you’re ready to enjoy them, cook them straight from frozen in the oven at 425°F (220°C) for approximately 20 minutes, checking until they’re heated through and crispy.
What are some common issues I might face while making these fries?
If your cheese doesn’t melt properly, ensure you place the fries under the broiler for the right amount of time—3 to 5 minutes—while closely watching to prevent burning. If the fries are soggy after reheating, it may be due to moisture—make sure to properly cool them before storing, and always reheat in the oven for the best texture!
Are there any dietary considerations for the Copycat Animal Style Fries?
If you’re preparing these fries for family or friends with dietary restrictions, consider offering alternative ingredients. You can use Greek yogurt instead of mayonnaise for a lighter sauce, or choose dairy-free cheese options to accommodate lactose intolerance. Additionally, be cautious with seasonings and relish if allergies are a concern.

Copycat Animal Style Fries for Ultimate Comfort and Flavor
Ingredients
Equipment
Method
- Melt 2 tablespoons of butter over medium-low heat. Add 1 tablespoon of neutral oil and the diced onions, seasoning with ½ teaspoon of salt. Stir occasionally for about 30 minutes until caramelized.
- In a mixing bowl, whisk together ½ cup of mayonnaise, 2 tablespoons of ketchup, 1 tablespoon of rice vinegar, 2 tablespoons of sweet relish, 1 teaspoon of sugar, and optional chili flakes. Set aside.
- Preheat your oven or fryer as per the frozen fries package instructions and cook fries for 15–20 minutes until golden and crispy.
- Transfer fries to a baking sheet and sprinkle with 1 cup of shredded cheese. Broil for 3–5 minutes until melted and bubbly.
- Top melted cheese fries with caramelized onions and drizzle the special sauce over the top. Serve hot.

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