Bring the taste of the Big Mac sauce home! With just a handful of keto friendly ingredients, you will be amazed at how much this copycat Big Mac sauce tastes like the real thing!

top down shot of big mac sauce on keto big mac salad


We use this often on our hamburgers at home and it is always a hit. It is great for satisfying those fast food cravings while being able to control what you’re eating. It’s also a perfect ‘secret sauce’ addition to surprise your guests at a backyard burger BBQ!

People always think Big Mac sauce has ketchup or French dressing in it, but the actual recipe doesn’t call for either. It’s simply mayo, mustard, vinegar, relish, and a few seasonings. We substitute dill pickle relish for the sweet pickle relish to make this a keto Big Mac Sauce, but it doesn’t change the flavor at all and we stay 100% keto!

There are so many ways to use this sauce other than on copycat Big Mac sliders, even if you aren’t on a keto diet. Make your own Big Mac chicken sandwiches or spread it on veggie patties. It’s even great as a dip for French fries!

Craving a fast-food burger but needing a salad? Grab some ground beef, iceberg lettuce or romaine lettuce, cheddar cheese, and any other toppings you wish and try our keto Big Mac salad recipe!

There are so many uses for this Big Mac sauce recipe, I guarantee it will become one of your family’s new standards!

Note: This post may contain affiliate links. That means if you click on a link and make a purchase we may receive a small commission. Thank you!

ingredients for Keto Big Mac Sauce

What is the Big Mac Sauce Made Of

  • Mayonnaise – To keep it keto, make sure you use regular, full-fat mayo. Lower fat options have added sugar.
  • Dill pickle relish – Just make sure to check the sugar content of the relish and choose ones with no added sugar. If you can’t find dill relish, just finely chop up dill pickles.
  • Yellow mustard – You can use your favorite brand.
  • White wine vinegar – In a pinch, regular distilled vinegar can work too.
  • Seasonings – You’ll need paprika, onion powder, and garlic powder.
Keto Big Mac Sauce ingredients in a bowl

How to Make Keto Big Mac Sauce

Step 1 – Stir together – In a small bowl whisk together all of the ingredients and set mixture aside.

That’s it! One step and you’re done 🙂

keto big mac sauce over a big mac bowl
Can You Have Big Mac Sauce on Keto?

The original Big Mac sauce is absolutely delicious and I know lots of people eating low carb love it. However, it causes problems if you are trying to follow a strict keto diet. The version you get it at McDonalds has added sugar from the sweet relish used in the sauce, but there is an easy way around that when you make it yourself.

For this recipe, we use dill pickle relish that does not include any added sugar. I promise it’s so good you won’t even notice the change. In fact, I like this version better!

This delicious sauce has 5 grams of fat per 1 tablespoon making it a great sauce to add to your meat of choice to help balance out your fat to protein macros.

How Many Carbs are in Big Mac Sauce?

There are 1-gram carbs and .2 grams fiber equaling less than 1gram NET carbs per tablespoon.

Does Thousand Island Dressing Taste Like Big Mac Sauce?

Thousand Island dressing does have similar ingredients as the Big Mac sauce and therefore the taste is somewhat similar. There are a few big differences, however.

For one, Thousand Island contains ketchup whereas Big Mac Sauce does not. This adds quite a bit of difference in flavor in the two sauces.

Thousand Island also uses a sweet paprika instead of regular paprika, and often contains lemon juice in addition to or sometimes instead of vinegar.

mini cheeseburger dipped in keto big mac sauce

How to Store It

Store your sauce in the refrigerator in an air tight container. It should last up to 2 weeks.

This recipe makes approximately 1 cup of sauce. The consistency is slightly chunky because of the pickle relish so we suggest a simple 1 cup storage container with a lid.

If you are packing it along with your lunch, we love these salad dressing containers with lids.

Keto Recipes that Use Big Mac Sauce

Like this recipe?
Make sure to follow us on Instagram and Pinterest for more recipes like this.

Servings: 16
Prep Time: 5 minutes
Total Time: 5 minutes

Keto Big Mac Sauce

Keto Big Mac Sauce ingredients in a bowl
Print Recipe
5 from 3 votes



  • In a small bowl whisk together all of the ingredients until well combined. Store in an airtight container in the refrigerator until ready to use.


Serving: 1tablespoon, Calories: 54kcal, Carbohydrates: 1g, Protein: 0.3g, Fat: 5g, Saturated Fat: 1g, Polyunsaturated Fat: 3g, Monounsaturated Fat: 1g, Trans Fat: 0.01g, Cholesterol: 3mg, Sodium: 106mg, Potassium: 14mg, Fiber: 0.2g, Sugar: 0.1g, Vitamin A: 74IU, Vitamin C: 0.1mg, Calcium: 3mg, Iron: 0.1mg
Nutrition Disclaimer: We are not certified nutritionists. Nutrition facts are an estimate and are provided as a courtesy. They are generated by an online API which recognizes ingredient names and amounts and makes calculations based on the serving size. Results may vary.
Course: Sauce
Cuisine: American
Handwritten signature for Kat & Melinda