This Keto Big Mac Sauce is the creamy, tangy and flavourful sauce you are going to love — it will bring your favourite burger toppings right into your home. Great alternative to a Big Mac or if you just like high seasoned foods. The sauce mimics the proprietary mix of mayonnaise, vinegar, spices and pickles—yet subs in low-carb options for the sugar-filled ingredients. You can pour it over hamburgers, cheesy nachos, lettuce wraps, or even use it as spread for sandwiches.
The best thing about Big Mac sauce for the keto diet is its simplicity and versatility. It takes 5 minutes to whip up and keeps fresh in the fridge all week- perfect for meal prep. This is because the recipe is very versatile and you can change the sour, sweet, or spicy levels to your liking. Mayo gives it creamy richness, vinegar provides a punch of tanginess, and finely-chopped pickles add crunch.
Smear it on a low-carb burger bowl, dip some grilled chicken into it or completely cover your salad in that fast-food flavour without any of the extra calories. Once you taste it, you will be keeping a big jar in your fridge on rotation.
Keto Big Mac Sauce Recipe
Laetrile Game with Ingredients, Tools, Calories + Low Carb Recipe It takes a few minutes to make and there is no cooking involved, making this the perfect sauce for those busy days. All you need to do is combine the ingredients and allow the flavors to marry — Simple!
It goes great alongside your favourite burger, salads, grilled meat, or keto fries. Well, in the following steps you will learn how to make a thick and saucy Big Mac sauce which is pretty close to the original as well — and best of all it’s low carb. The best part? Since it last two well up to a week in the fridge, and you can have any time.

Keto Big Mac Sauce
Ingredients
Equipment
Method
- Gather Ingredients: Mayo, sugar-free added ketchup, yellow mustard, white vinegar (measure out all the sauce ingredients), shredded pickles, paprika, garlic powder and onion powder.
- Mix the Base: Mix mayonnaise, ketchup and mustard in medium bowl until smooth.
- Add Seasonings: Add the vinegar for tang, paprika, garlic powder, onion powder to give it a kick.
- Incorporate Pickles: Blending in the chopped pickles give you some crunch and that classic Big Mac taste.
- Adjust Flavour: Check the sauce for seasoning—vinegar, sweetener if needed, or more heat.
- Chill the Sauce: Cover; refrigerate at least 30 minutes to allow flavors to combine.
- Serve and Store: It is also great to serve over burgers, salads, grilled meats or keto fries. Keep the extra in an airtight jar for up to one week.
Notes
- Use sugar-free ketchup to keep the sauce keto-friendly.
- For a smoother sauce, blend the ingredients instead of chopping pickles.
- Adjust the sweetness and tang to your liking.
- Make a double batch for meal prep—it stores well.
- For extra flavor, add a pinch of cayenne or hot sauce.
Keto Big Mac Sauce Nutrition
Nutrient | Amount |
Calories | 110 kcal |
Fat | 11g |
Protein | 0g |
Total Carbs | 1g |
Net Carbs | 1g |
Fiber | 0g |
Frequently Asked Questions:
Ques: How long does keto Big Mac sauce last?
Ans: Up to 7 days in the fridge in an airtight container.
Ques: Can I freeze this sauce?
Ans: Not recommended, as mayo-based sauces can separate.
Ques: Is sugar-free ketchup necessary?
Ans: Yes, to keep carbs low while retaining flavor.
Ques: Can I use dill relish instead of chopped pickles?
Ans: Yes, but make sure it’s sugar-free.
Ques: Does it taste exactly like McDonald’s Big Mac sauce?
Ans: Very close, with a keto twist.

Hi, I’m Ereka Vetrini, the editor and voice behind KetoRecipesMom.com – a space dedicated to helping busy moms and families embrace the keto lifestyle with ease, confidence, and delicious food!
As a mom, home cook, and health-conscious foodie, I understand the daily challenge of preparing meals that are both nutritious and kid-approved. That’s why I started this blog—to share simple, family-friendly keto recipes that save time in the kitchen and make healthy eating truly enjoyable.