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In-N-Out Copycat Double-Double Animal-Style Burger

Try these Double-Double Animal Style burgers (In-N-Out Burger Copycat) at home...you will not be disappointed!

If you haven't heard of In-N-Out Burger, it's a famous chain of fast food restaurants primarily in the Southwest and Pacific Coast areas. Our favorite burger from here has always been the Double Double Animal Style!

3 side by side In-N-Out Copycat Double-Double Animal-Style Burger

It has: two beef patties fried in mustard, two slices of cheese, special sauce, pickles, tomatoes, lettuce, and caramelized onions, all on a toasted bun!

Oh yeah...it is AMAZINGLY deelicious!

bite shot of an IIn-N-Out Copycat Double-Double Animal-Style Burger

Recipe Notes

During the cooking process, I like to toast the buns first, keep them paired up, and place them in the same plastic bag they were packaged in. (It will keep them warm while you are cooking your beef patties.)
The burger patties are VERY thin when prepping, so keep the patty on the wax paper until you are ready to flip it on the pan. It will keep your patties from falling apart while laying them on the pan to fry! Watch the full Recipe Video below to see the process.
Frying each beef patty with a little mustard is one of In-N-Out's tricks to give them that flavorful crust, so don't skip that step! They don't taste "mustardy." I had a friend who doesn't like mustard try them, and he still loved them!

Double-Double Animal Style Layers:

Now, let's talk about all of those yummy layers!

This is the order:

bottom bun
1 tablespoon sauce
4 pickles
1 tomato slice
2 lettuce leaves torn
beef patty with cheese
1 tablespoon caramelized onions
beef patty with cheese
top bun

How to make In-N-Out Burger Copycat "Double-Double Animal Style Burger"

Caramelized Onions:

Heat 1 tablespoon of olive oil in a large skillet, on Medium-High heat. Add the diced onions and salt, and give it a good stir.

Reduce heat to medium/low. Cook, stirring occasionally, 15-20 minutes, or until onions are lightly browned.
Turn heat back up to Medium-High. Add 1 Tbps water, stir and let cook about 2-3 minutes until water evaporates (or until onions start to slightly stick to the pan). Repeat 2 more times.

caramelized onions for the In-N-Out Burger Copycat Double-Double Animal Style

Store in a container until ready to use.

Special Sauce:

Add all ingredients for the special sauce in a bowl.

Whisk until well combined. Cover, and store in the refrigerator until ready to use.

Special Sauce (Secret sauce) for n-N-Out Burger Copycat Double-Double Animal Style

Buns:

Heat a skillet on Medium-High heat , add a little butter, about 1 teaspoon per bun. Toast the inside of the buns for about 1 minute (until the edges are dark brown but not burned). Set aside.

Mustard Fried Beef Patties:

Cut the beef into 8 pieces, and roll each piece into a ball.

Lay out a large piece of wax paper.
Flatten out a beef ball in your hands, lay on the wax paper and start shaping into a patty. (You want it really thin, about 4” diameter, or slightly larger then the bun.)

Repeat, until you have all beef patties laid out on your wax paper. Season them with salt and pepper.

Cut a square shape of wax paper around each beef patty, then stack them on a plate.

Lightly oil a large skillet and heat on Medium-High for a few minutes (you want the pan HOT before adding the patties). Place 2 patties on the pan (seasoned side down).

Quickly season the top with salt, pepper and 1 tablespoon mustard.

adding mustard to the beef patties for the In-N-Out Burger Copycat Double-Double Animal Style

Cook until browned, about 2-3 minutes. Flip, then cook 1 minute, then add sliced cheese on both patties, and 1 heaping tablespoon of caramelized onions on one patty.

adding caramelized onions to the beef stack for the In-N-Out Burger Copycat Double-Double Animal Style

Stack the cheese patty on the onion patty. Remove the stack from the pan. Repeat with the remaining patties.

double cheese burger stack for the In-N-Out Burger Copycat Double-Double Animal Style

Assembly:

Assemble the burgers in this order:

bottom bun
1 tablespoon sauce
4 pickles
1 tomato slice
2 lettuce leaves torn
double meat/cheese onion stack
top bun

assembling the layers of the In-N-Out Copycat Double-Double Animal-Style Burger

Make-Ahead Tips for the Double-Double Animal Style Burger

If possible, do most of the prep work ahead of time. This way you only have to cook the beef patties, toast the buns, and assemble the burgers when you are ready to eat!

The caramelized onions are what takes the longest time to cook, so I always make those ahead of time.
The sauce comes together quickly, and it taste better the longer it sits.
Form the patties on a large piece of wax paper, then cut the wax paper in a square shape around each patty. Stack the burgers & store in a container.
Refrigerate everything until you are ready to cook!

picking up one of the In-N-Out Copycat Double-Double Animal-Style Burger

Enjoy! 🙂

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In-N-Out Burger Copycat Double-Double Animal Style

Double-Double Animal Style (In-N-Out Burger Copycat)

This burger has two beef patties fried in mustard, two slices of cheese, special sauce, pickles, tomatoes, lettuce, and caramelized onions, all on a toasted bun! Oh yeah...it is AMAZINGLY delicious!

4.97 from 29 votes

Print Pin Rate

Prep Time: 30

Cook Time: 20

Total Time: 50

Servings: Double Double Burgers

Calories: 670kcal

Equipment

12" Cast Iron Skillet