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    Home ยป Recipes ยป Keto Burger - In-N-Out Style ๐Ÿ”

    Keto Burger - In-N-Out Style ๐Ÿ”

    Published: Jun 23, 2020 ยท Updated: Jul 27, 2023 by Cast Iron Keto ยท 10 Comments

    Jump to Recipe Print Recipe

    This Keto Burger is made to resemble an Animal Style Double Double Cheeseburger from In-N-Out. It's gluten-free, low-carb, and super tasty either as a bunless burger or with a Keto-friendly bun.

    Keto Burger on a upside down sheet pan with tomatoes in the background

    Obviously you don't need a recipe for a simple Keto Burger but today we're sharing this In-N-Out copycat recipe that we think you're going to LOVE! I mean, who doesn't love In-N-Out?

    Here are the benefits of making your own In-N-Out Keto Burger at home versus option for a fast food burger:

    • Low-carb - there are only about 3 net carbs in this Keto Burger.
    • Quality ingredients - you have complete control to choose higher quality ingredients like grass-fed beef, unprocessed American cheese, and organic veggies and fats if that's your thing.
    Jump to:
    • Preparation and cooking overview
    • Chef's note
    • ๐Ÿ” Ingredients for this keto burger recipe
    • Ingredient substitutions
    • Additional ingredients
    • Cooking tools required
    • Tools substitute options
    • How to make Keto Burger: step-by-step guide
    • Cooking methods
    • Preparation steps
    • Cooking instructions
    • What to serve with keto burgers?
    • How to make it healthier?
    • What can I prepare ahead of time?
    • Storage and reheating instructions
    • Recipe wrap-up and conclusion
    • Frequently asked questions
    • ๐Ÿ“– Recipe

    Preparation and cooking overview

    In less than 30 minutes, you can easily prepare this Keto Burger Recipe. Shape and season the ground beef patties, cook the onions until golden brown, and prepare the fry sauce. Cook the burger patties and add mustard and cheese. Lastly, assemble everything in the form of a burger, and enjoy!

    Chef's note

    Assemble your keto burgers with low-carb burger buns! Our Keto Dinner Rolls are a great low-carb option to enjoy a classic burger! Also, have fun with toppings! Add jalapenos, bacon strips, or grilled mushrooms.

    • Prep Time: 10 minutes
    • Cooking Time: 16 minutes
    • Total Time: 26 Minutes
    • Difficulty Level: Easy
    • Recipe Makes 2 Servings

    ๐Ÿ” Ingredients for this keto burger recipe

    Let's make some low-carb burgers with simple ingredients!

    Onions

    • 1 tablespoon butter
    • ยผ cup diced white onion
    • โ…› teaspoon sea salt

    Beef patties

    • ยฝ pound ground beef
    • 4 teaspoons yellow mustard
    • ยผ teaspoon sea salt
    • โ…› teaspoon freshly ground black pepper

    Fry sauce

    • 3 tablespoons mayonnaise
    • 1 tablespoon sugar-free ketchup
    • 2 teaspoons minced dill pickles
    • 1 teaspoon powdered erythritol
    • ยฝ teaspoon distilled white vinegar

    To serve

    • 2 keto buns or 8 slices of iceberg lettuce
    • 4 dill pickle chips
    • 2 slices tomato
    • 2 slices of unprocessed American-style cheese

    Ingredient substitutions

    • Ground beef: Stick with ground beef, but opt for a leaner option for a lower fat content. If you don't like ground beef, you can have other forms of meat like chicken, turkey, or pork, but remember it will change the classic In-N-Out Style burger.
    • Onions: Substitute with shallots or red onions.
    • Butter: You can use ghee or coconut oil as a keto-friendly alternative to butter.
    • Sea salt: Any salt, such as pink Himalayan or kosher salt, can be used as a substitute.
    • Yellow mustard: In case you don't have yellow mustard, Dijon or spicy brown mustard are keto-friendly alternatives.
    • Mayonnaise: Look for sugar-free or keto-friendly mayonnaise available in stores, or make your own Homemade Keto Mayo.
    • Sugar-free ketchup: Opt for sugar-free ketchup brands like Primal Kitchen or Heinz No Sugar Added Ketchup to keep it keto-friendly.
    • Erythritol: You can use other keto-friendly sweeteners like powdered monk fruit or stevia as a substitute for powdered erythritol.
    • Unprocessed American-style cheese: Swap with other unprocessed cheese options like cheddar, provolone, or Swiss cheese slices to keep it keto-friendly.

    Additional ingredients

    These additional keto-friendly ingredients will enhance the flavor and texture of your keto burgers!

    • Bacon: Cook a few slices of crispy bacon to add a smoky flavor to your homemade burger.
    • Avocado: Slice up some fresh avocado to add creaminess and healthy fats to your burger.
    • Lettuce: Add a layer of fresh lettuce for a refreshing crunch. You can also make a lettuce-wrapped burger.
    • Jalapenos: For a spicy kick, slice some jalapenos and add them for an extra flavor boost.
    • Grilled mushrooms: Grill or sautรฉ mushrooms to add a delicious umami flavor.
    • Caramelized bell peppers: Sautรฉ thinly sliced bell peppers until caramelized for a sweet and savory addition to the beef burgers.
    • Sliced cheese: Experiment with different types of sliced cheese like provolone, Swiss, pepper jack, or cheddar cheese for a keto cheeseburger experience.
    • Grain-free pickles: Look for pickles made without added sugars or artificial additives.
    Keto Burger on a upside down sheet pan with tomatoes in the background

    Cooking tools required

    To make this Low Carb Burger Recipe, you will need the following kitchen tools:

    • Cast-iron skillet
    • Small bowl
    • Plate
    • Spatula or tongs

    Tools substitute options

    • Cast iron skillet: No worries if you don't have one! You can use a non-stick skillet or frying pan.

    How to make Keto Burger: step-by-step guide

    Cooking methods

    • Pan-searing

    Preparation steps

    1. Gather all the ingredients needed for the recipe.
    2. Measure the ingredients precisely.
    3. Wash and rinse the vegetables, such as the white onion, tomatoes, and lettuce.
    4. Peel and mince the garlic.
    5. Slice the unprocessed American-style cheese.

    Cooking instructions

    Prepare the fry sauce

    1. Mix all the ingredients for the fry sauce in a small bowl or jar. Refrigerate the sauce until ready to use.

    Caramelize onions

    1. Heat the butter in a cast-iron skillet over medium heat.
    2. Once melted, lower the heat and add the diced onions. Cook them until they turn dark golden brown, approximately 10 minutes. Stir occasionally.
    3. Once the onions are done, remove them from the skillet and set them on a plate.

    Makeย an In-N-Out keto burger

    1. Start by portioning out 4 (2-ounce) ground beef patties. Flatten them until they are about the width of your fist. Season the patties with salt and pepper.
    2. Increase the heat to medium and place the burger patties in the same skillet where you caramelized onions.
    3. Cook for 2-3 minutes per side.
    4. Once you flip, brush the tops of each burger with a teaspoon of yellow mustard. Flip, then place a slice of cheese on top of two of the burgers. Cover the skillet and cook for 2-3 minutes while the cheese is melting.
    5. Assemble the Keto Burgers - if using a bun, simply stack from the bottom up...tomato, pickle, a patty with cheese on top, the other patty, fry sauce, and onions. If using lettuce, simply do the same order and wrap in lettuce.
    Keto Burger on a upside down sheet pan with tomatoes in the background

    Chef's pro tip

    For a mouthwatering keto burger, avoid overcooking the patties. Cook them for the recommended time and resist pressing with a spatula. You'll have delicious keto burger patties every time!

    What to serve with keto burgers?

    Take this recipe to new heights by pairing it with some mouthwatering keto-friendly sides!

    • Keto burger buns: For a complete burger experience, pair these burgers with our low-carb burger buns like Keto Dinner Rolls or Seeded Bread.
    • Side salads: Complement your meal with a fresh, crisp side salad like Caprese Salad or Charred Brussels Sprout Salad.
    • Keto fries: Hands down to the fries, as they are the best keto burger sides! Some keto-friendly fries are Halloumi Fries, Zucchini Crisps, and Celeriac Fries.
    • Avocado salad: Create a refreshing salad with diced avocado, cherry tomatoes, red onion, and a squeeze of lime juice for a creamy and tangy side dish.
    • Keto coleslaw: Whip up a keto-friendly coleslaw or try our Keto Crack-Slaw.

    How to make it healthier?

    • Use homemade or low-sodium condiments to reduce added sugars and sodium intake.
    • Opt for organic grass-fed beef, vegetables, and dairy products, if possible.
    • Include more vegetables by adding more lettuce, tomatoes, pickles, and other veggies.

    What can I prepare ahead of time?

    • Pre-make the fry sauce: Mix all the ingredients for the fry sauce, and refrigerate until ready to use.
    • Portion and season the patties: Prepare and season the ground beef patties in advance, then refrigerate until cooking time.

    Storage and reheating instructions

    Storage tips

    To store the leftovers, place them in an airtight container or wrap them tightly with plastic wrap. Keep them in the refrigerator for 3-4 days to maintain freshness.

    Reheating tips

    • Oven: Preheat the oven to 350ยฐF (175ยฐC). Place the leftovers on a baking sheet and bake for 10-15 minutes until heated.
    • Microwave: Place the leftovers on a microwave-safe plate and cover them with a lid or wrap. Reheat in the microwave on medium power at 30-second intervals until warmed to your liking.
    • Stove: Heat a skillet over medium heat and place the leftovers in the pan. Cook for a few minutes on each side until heated.

    Recipe wrap-up and conclusion

    Try this delightful Keto Burger recipe, offering a satisfying and gluten-free twist on the classic In-N-Out burger. With tasty beef patties, flavorful fry sauce, and low-carb bun alternatives, these burgers are perfect for your keto diet. The best part? You can enjoy the nostalgic taste of a classic burger in under 30 minutes.

    Are you looking for more ground beef Keto recipes? Check these out โ†“

    • Keto Cheeseburger Casserole Skillet
    • Cheesy Mexican Taco Skillet
    • Keto Sloppy Joes (Skillet Style)
    • Keto Italian Sub Sandwich Casserole

    Explore these mouthwatering keto burger recipes for a tasty snack or appetizer:

    • Keto Turkey Burgers
    • Keto Chipotle Chicken Avocado BLT
    • Keto Shrimp Po'Boy Sliders
    • Keto Buffalo Chicken Sliders
    • Keto Cuban Sliders
    • Keto Monte Cristo Sliders
    • Keto Philly Cheesesteak Sliders
    • Keto Ham and Cheese Sliders

    Frequently asked questions

    A keto burger is a type of burger where we replace traditional buns with keto-friendly alternatives. You can make a lettuce-wrapped burger or make it with keto-friendly buns. It's important to make it with high-quality ingredients and keep everything low in carbohydrates and high in healthy fats.

    Fry sauce is a condiment commonly served with French fries and made by combining tomato ketchup and mayonnaise. In our In-N-Out style fry sauce, we've added minced dill pickles, vinegar, and a keto sweetener like powdered erythritol.

    An In-N-Out style Keto Burger recipe includes butter-grilled onions, two mustard grilled burger patties, one slice of American cheese, fry sauce, pickles, and tomato.

    You can find unprocessed American-style cheese at various grocery stores. Look for brands like Organic Valley, Horizon Organics, Applegate, and other quality cheese brands in your local area.

    Some popular topping options include lettuce wraps, sliced avocado, bacon, cheese, pickles, sautรฉed mushrooms, onions, and sugar-free mustard and ketchup. Be creative and choose toppings that align with your keto lifestyle.

    We suggest you make one at home! Our In-N-Out Style Keto Burger is a specific variation of a keto hamburger. While the main concept of a keto hamburger remains the same (low-carb and high-fat), different recipes may vary in seasoning, toppings, or cooking methods.

    ๐Ÿ“– Recipe

    Keto Burger on a upside down sheet pan with tomatoes in the background

    Keto Burger - In-N-Out Style

    This Keto Burger is made to resemble an Animal Style Double Double Cheeseburger from In-N-Out. It's gluten-free, low-carb, and super tasty! #keto #ketorecipe #lowcarb
    4.86 from 27 votes
    Print Rate Pin Recipe
    Course: Main Course
    Cuisine: American
    Keyword: beef burger, in-n-out burger, keto burger
    Prep Time: 10 minutes minutes
    Cook Time: 16 minutes minutes
    Total Time: 26 minutes minutes
    Servings: 2
    Calories: 605kcal

    Ingredients

    Onions

    • 1 tablespoon butter
    • ยผ cup diced white onion
    • โ…› teaspoon sea salt

    Beef patties

    • ยฝ pound ground beef
    • 4 teaspoons yellow mustard
    • ยผ teaspoon sea salt
    • โ…› teaspoon freshly ground black pepper

    Fry sauce

    • 3 tablespoons mayonnaise
    • 1 tablespoon sugar-free ketchup
    • 2 teaspoons minced dill pickles
    • 1 teaspoon powdered erythritol
    • ยฝ teaspoon distilled white vinegar

    To serve

    • 2 keto buns or 8 slices of iceberg lettuce
    • 4 dill pickle chips
    • 2 slices tomato
    • 2 slices of unprocessed American-style cheese
    US Customary - Metric

    Instructions

    Prepare the fry sauce

    • Mix all the ingredients for the fry sauce in a small bowl or jar. Refrigerate the sauce until ready to use.

    Caramelize onions

    • Heat the butter in a cast-iron skillet over medium heat.
    • Once melted, lower the heat and add the diced onions. Cook them until they turn dark golden brown, approximately 10 minutes. Stir occasionally.
    • Once the onions are done, remove them from the skillet and set them on a plate.

    Makeย an In-N-Out keto burger

    • Start by portioning out 4 (2-ounce) ground beef patties. Flatten them until they are about the width of your fist. Season the patties with salt and pepper.
    • Increase the heat to medium and place the burger patties in the same skillet where you caramelized onions.
    • Cook for 2-3 minutes per side.
    • Once you flip, brush the tops of each burger with a teaspoon of yellow mustard. Flip, then place a slice of cheese on top of two of the burgers. Cover the skillet and cook for 2-3 minutes while the cheese is melting.
    • Assemble the Keto Burgers - if using a bun, simply stack from the bottom up...tomato, pickle, a patty with cheese on top, the other patty, fry sauce, and onions. If using lettuce, simply do the same order and wrap in lettuce.

    Nutrition

    Nutrition Facts
    Keto Burger - In-N-Out Style
    Amount Per Serving
    Calories 605 Calories from Fat 468
    % Daily Value*
    Fat 52g80%
    Saturated Fat 19g119%
    Cholesterol 125mg42%
    Sodium 1458mg63%
    Potassium 670mg19%
    Carbohydrates 6g2%
    Fiber 3g13%
    Sugar 6g7%
    Protein 26g52%
    Vitamin A 1248IU25%
    Vitamin C 10mg12%
    Calcium 272mg27%
    Iron 3mg17%
    *

    Nutritional values are estimates only and do not include carbs from sugar alcohols.

    # Hashtag with us!Don't forget to mention @castiron_keto or tag #castironketo on Instagram with your creations! We love seeing what you're making.
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    Reader Interactions

    Comments

    1. Pam says

      June 23, 2020 at 5:49 pm

      Sounds Delicious. My husband loves the burgers from there with a lettuce wrap. Do you happen to know a good Keto bun recipe?
      Can't seem to find unprocessed American cheese slices right now....looking but maybe thinking you all would have an idea where to buy. I am in Colorado, just so you know.

      I am looking forward to trying this!! My husband will love you as well....LOL...

      Reply
      • Pam says

        June 23, 2020 at 5:51 pm

        Sorry, I just saw the other links and comments about buns and cheese below....
        Durrrrโ€ฆ.

        Reply
    2. Lamar Smith says

      June 23, 2020 at 10:20 pm

      Man, I can't wait to make this. I'm going to us Primal Kitchens spicy Kitchen. Anyways, serving says 2 using 1/2 beef. So the double is 2 2oz patties correct?
      Thanks

      Reply
      • Cast Iron Keto says

        June 24, 2020 at 12:57 pm

        That's correct!

        Reply
    3. cw says

      June 28, 2020 at 12:59 am

      5 stars
      Recipe really gets all those flavors of going there. We used Impossible meat as a sub as we are tired of so much meat on the diet - was great as you can't get it that way at In-n-out, sol delicious one of the best meals we had in a long time

      Reply
    4. Monique says

      June 30, 2020 at 10:23 pm

      5 stars
      Made these over the weekend and again tonight sans cheese (dairy free for the summer)!! Caramelized onions
      are my new favorite thing!!

      Reply
    5. Cristina says

      February 09, 2021 at 1:56 pm

      5 stars
      OMG... I have been craving a real burger but we aren't allowed to leave our town (I live in Spain) with the COVID restrictions and you can't get a good burger anywhere around. This hit the spot and satisfied my craving! Thank you! I will be making this again and again! Kids ate with buns, the hubby with a home-made gluten free bun and I with lettuce... YUM!

      Reply
    6. Sabrina says

      April 07, 2021 at 6:28 pm

      5 stars
      FREAKIN' AWESOME!!! I just started Keto on Monday and this burger made me sooooo HAPPY last night. My husband and my son were also over the top with it's deliciousness!
      Thank you so much for sharing!

      Reply
    7. Shelley says

      July 09, 2021 at 6:26 pm

      5 stars
      These are AMAZING!! We used sliced Colby jack and added freshly sliced red onion, too. So good. Cannot wait to make it again.

      Reply
    8. Erin says

      January 07, 2023 at 12:33 am

      5 stars
      Sooo good! Tastes just like real In-N-Out. I used the 0 carb buns from Aldi (L'Oven brand); their flavor and texture are the closest to "real" bread, imho.

      Reply

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