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You are here: Home / Mains / Burgers / Copycat In-n-Out Burger

Copycat In-n-Out Burger

August 18, 2025 By Lisa

Copycat In-n-Out Burger I LisaGCooks.com
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Here I present, my recipe for Copycat In-n-Out Burgers. This is a  homemade, copycat recipe for In-n-Out Burgers, they are gooey and yummy, and tastes identical to takeout!

This is how you make them:

Start  with the sauce

Thousand Island Dressing I LisaGCooks.com

Mix all ingredients together, then store in the fridge.

 

Then the onions

Copycat In-n-Out Burger I LisaGCooks.com

Copycat In-n-Out Burger I LisaGCooks.com\

Copycat In-n-Out Burger I LisaGCooks.com

Copycat In-n-Out Burger I LisaGCooks.com

Add the butter to a large pan and heat over medium high heat.

Copycat In-n-Out Burger I LisaGCooks.com

When it’s hot and the butter has melted, add the onions and season with salt, mix well ensuring the onions are coated in the butter.

Continue sautéing at this temperature until you see the onions are starting to brown (about 10 minutes).

When the onions are starting to brown, drop the heat to low and allow them to caramelize for about 30 minutes, up to an hour (low and slow).

Copycat In-n-Out Burger I LisaGCooks.com

Add the stock to the pan, and gently scrape and mix the onion until everything is warmed through. 

Smash Burgers

(I like to use the pan that I cooked the onion in)

This is how I make Smash Burgers

Smash Burgers I LisaGCooks.com

To make the beef patties I simply roll the meat into the size of golf balls. 

Smash Burgers I LisaGCooks.com

Smash Burgers I LisaGCooks.com                 

Then I place the balls into the very hot pan and immediately flatten them, as thin as I can get them (I use a strong spatula).

Smash Burgers I LisaGCooks.com

Smash Burgers I LisaGCooks.com

The patties get seasoned liberally with salt and pepper.    

Smash Burgers I LisaGCooks.com

Smash Burgers I LisaGCooks.com

I flip the burgers after 2-3 minutes, when there’s a yummy darkened crust; the I season this second side with salt and pepper also.

The patties then cook for anther 2 minutes on medium-high.

I transfer the cooked patties to a plate and cover them with a bowl until all the patties are cooked.    

Then its time to assemble!

Copycat In-n-Out Burger I LisaGCooks.com

Start with the Bottom bun

Copycat In-n-Out Burger I LisaGCooks.com

Add sauce

Copycat In-n-Out Burger I LisaGCooks.com

Sliced pickles

Copycat In-n-Out Burger I LisaGCooks.com

Slice of tomato

Copycat In-n-Out Burger I LisaGCooks.com

Lettuce

Copycat In-n-Out Burger I LisaGCooks.com

Beef patty

Copycat In-n-Out Burger I LisaGCooks.com

Cheese slice

Copycat In-n-Out Burger I LisaGCooks.com

Caramelized onion

Copycat In-n-Out Burger I LisaGCooks.com

Top  bun (you can butter it, but I cheat and put more sauce!)

Copycat In-n-Out Burger I LisaGCooks.com

Enjoy 🙂

 

 

Ingredients used in this recipe

Thousand Island Dressing I LisaGCooks.com

Great Value Real Mayonnaise

Pro tip of the day – this mayonnaise tastes IDENTICAL to Hellman’s Mayonnaise but its half the price!

 

Thousand Island Dressing I LisaGCooks.com

Great Value Tomato Ketchup

 

Thousand Island Dressing I LisaGCooks.com

Sweet Green Relish

 

What I served with these burgers 

Roasted Potato Wedges

Potato Wedges (Wedgies!)

 

 

 

Copycat In-n-Out Burger I LisaGCooks.com

 

 

 

 

 

A homemade, copycat recipe for In-n-Out Burgers; they are gooey and yummy, and tastes identical to takeout!

 

 

 

 

Copycat In-n-Out Burger I LisaGCooks.com

 

 

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Homemade Double Cheeseburgers I LisaGCooks.com

Double Cheeseburgers

 

 

Deluxe Cheeseburgers I LisaGCooks.com

Deluxe Cheeseburgers

 

Chili Cheese Dogs I LisaGCooks.com

Chili Cheese Dogs

 

 

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Copycat In-n-Out Burger I LisaGCooks.com

Copycat In-n-Out Burger


  • Author: Lisa G Cooks
  • Total Time: 1 hour 5 minutes
  • Yield: 8 Burgers 1x
Print Recipe
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Description

A homemade, copycat recipe for In-n-Out Burgers; they are gooey and yummy, and tastes identical to takeout!


Ingredients

Scale

Start  with the sauce

1/2 cup mayonnaise 

3 1/2 tbsp ketchup

1 tsp yellow mustard 

1 tbsp dill pickle brine 

1 tbsp sweet relish

5 dashes Worcestershire sauce 

1/2 tsp salt

1/2 tsp sugar

1/4 tsp pepper

Then the onions

1 tbsp salted butter

5–6 onions, sliced

Salt, to taste

Pepper, to taste

1/4 cup sodium-reduced stock 

Smash Burgers

600 g Lean ground beef

Salt, to taste

Pepper, to taste

Hamburger buns for serving or piles of lettuce if you prefer

To assemble:

8 buns, sliced pickles, tomato, lettuce, and cheese slices.


Instructions

Start  with the sauce

Whisk all ingredients together, then store in the fridge.

 

Then the onions

Add the butter to a large pan and heat over medium high heat.

When it’s hot and the butter has melted, add the onions and season with salt, mix well ensuring the onions are coated in the butter.

Continue sautéing at this temperature until you see the onions are starting to brown (about 10 minutes).

When the onions are starting to brown, drop the heat to low and allow them to caramelize for about 30 minutes, up to an hour (low and slow).

Add the stock to the pan, and gently scrape and mix the onion until everything is warmed through. 

 

Smash Burgers

(I like to use the pan that I cooked the onion in)

To make the beef patties simply roll the meat into the size of golf balls (you should get 9 or 10 patties).                   

Place the balls into the very hot pan and immediately flatten them, as thin as you can get them (I used a strong spatula).

Season liberally with salt and pepper.    

Flip the burgers after 2-3 minutes, when there’s a yummy darkened crust; season this second side with salt and pepper also.

Cook for anther 2 minutes on medium-high.

Transfer the cooke patties to a plate and cover with a bowl until all the patties are cooked.    

Then you assemble!

Start with the Bottom bun,

Add sauce

Sliced pickles

Slice of tomato

Lettuce

Beef patty

Cheese slice

Caramelized onion

Top  bun (you can butter it, but I cheat and put more sauce!)

Enjoy 🙂

 

Notes

  1. This will yield 8 burgers, but you can easily make it 4 doubles instead – just double the cheese and place the extra slice in between beef patties.
  2. You can use any stock, or wine for the caramelized onion.
  3. You can do the sauce ahead of time – upto 3 days.
  • Prep Time: 20 Minutes
  • Cook Time: 45 minutes
  • Category: Burger
  • Method: Stovetop
  • Cuisine: American

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Filed Under: Burgers, Lisa G News

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