Keto Burger - In-N-Out Style Recipe

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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'll LOVE! Who doesn't love In-N-Out?

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

Low-carb - there are only about 3 net carbs in this Keto Burger.
Quality ingredients—You have complete control over choosing higher-quality ingredients like grass-fed beef, unprocessed American cheese, and organic veggies and fats.

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Preparation and cooking overview
Chef's note
🍔 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
📖 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 as 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 for 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

🍔 Ingredients for this keto burger recipe

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

Onions

1 tablespoon butter
¼ cup diced white onion
⅛ teaspoon sea salt

Beef patties

½ pound ground beef
4 teaspoons yellow mustard
¼ teaspoon sea salt
⅛ teaspoon freshly ground black pepper

Fry sauce

3 tablespoons mayonnaise
1 tablespoon sugar-free ketchup
2 teaspoons minced dill pickles
1 teaspoon powdered erythritol
½ 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 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: If 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: To keep it keto-friendly, opt for sugar-free ketchup brands like Primal Kitchen or Heinz No Sugar Added Ketchup.
Erythritol: You can use other keto-friendly sweeteners like powdered monk fruit or stevia as a substitute for powdered erythritol.
Unprocessed American 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 sauté mushrooms to add a delicious umami flavor.
Caramelized bell peppers: Sauté thinly sliced bell peppers until caramelized for a sweet and savory addition to the beef burgers.
Sliced cheese: For a keto cheeseburger experience, experiment with different types of sliced cheese, such as provolone, Swiss, pepper jack, or cheddar.
Grain-free pickles: Look for pickles made without added sugars or artificial additives.

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: If you don't have one, no worries! 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

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

Cooking 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.

Make 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, stack from the bottom up: tomato, pickle, patty with cheese on top, the other patty, fry sauce, and onions. If using lettuce, place it in the same order and wrap it in lettuce.

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

Reheating tips

Oven: Preheat the oven to 350°F (175°C). 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 ↓

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

What is a keto burger?

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.

What is fry sauce?

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.

What's in an In-N-Out style Keto Burger recipe?

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.

Where to find unprocessed American cheese?

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

What keto burger toppings can we use?

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

Is keto burger healthy?

Yes, a keto burger is healthy. It's packed with protein and healthy fats, and using keto-friendly buns or lettuce wraps significantly reduces carbs, making it a great choice for those on a low-carb diet.

📖 Recipe

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 CourseCuisine: AmericanKeyword: beef burger, in-n-out burger, keto burger Prep Time: 10 minutes Cook Time: 16 minutes Total Time: 26 minutes Servings: 2 Calories: 605kcal