Keto Big Mac Sauce is a low-carb version of the famous fast-food burger sauce – it has a tangy, creamy flavor that’s loaded with smokiness and so much flavor without any added sugars or sneaky carbs. Classic versions typically add sugar in the form of ketchup and pickle relish, but the keto version uses sugar-free ketchup and either dill pickle relish or low-carb sweeteners like stevia. The backbone is usually made with mayonnaise, which gives the mixture richness and body.
The addition of mustard, vinegar, onion powder, and paprika gives the sauce a complete flavor with a bit of tang and sweetness. Some like a kick: They’ll add a touch of hot sauce or smoked paprika. It comes together in minutes, and the flavors meld even better after a chill.
Of course, this keto-friendly sauce is far more versatile; don’t just use it on burgers. You can serve it as a dip with veggies, drizzle it over lettuce wraps, put it on salads, or serve it alongside grilled meats. It’s particularly popular crumbled into keto “Big Mac salads,” in which its flavor can take the place of a beefy Big Mac without the bun.
This Keto Big Mac sauce is easy, so easy to make, and tastes excellent, but is hugely adaptable and full of flavor, a perfect sauce to keep in the fridge for anytime I get a craving for traditional fast-food flavors, but while living the keto and low-carb lifestyle.
Keto Big Mac Sauce
Ingredients
Equipment
Method
- In small bowl, combine mayonnaise, relish, mustard and vinegar
- Stir in the garlic powder, onion powder, paprika, sweetener and salt
- Make sure all those ingredients are well combined and smooth
- For tang, add more vinegar; for balance, sweetener
- Chill for at least 30 minutes to allow flavors to meld
- Use on burger bowls, lettuce wraps or grilled chicken
Notes
Flavour Profile of Keto Big Mac Sauce
- Tangy & Creamy- Richness comes from a mayonnaise base, and tang is dialed up by the use of vinegar or pickle juice.
- Zesty & Savory- And that’s mighty and savory with mustard and garlic, onion powder
- Sweet & Balanced- A little keto-approved sweetener helps offset the tanginess for that signature Big Mac taste.
- Pickle Sharpness- Chopped pickles or relish- provide a sharp, briny bite.
- Smooth & Velvety- You will enjoy the dense and creamy profile for spreading, dipping, or topping.
Keto Big Mac Sauce Nutrition and Calories
| Nutrient | Amount per Serving |
| Calories | 120–140 kcal |
| Total Fat | 12–14 g |
| Saturated Fat | 2 g |
| Protein | <1 g |
| Total Carbohydrates | 1–2 g |
| Dietary Fiber | 0 g |
| Net Carbs | 1–2 g |
| Sugar | <1 g |
| Sodium | 180–220 mg |
FAQs
Q1. Is Big Mac sauce keto-friendly?
A1. Yes—it’s only 1-2 net carbs per serving and there is zero added sugar!
Q2. What is in Big Mac sauce that makes it so good?
A2. The mayo, mustard, pickles, vinegar, and sweetener are all what lend it its tangy-sweet flavor.
Q3. Can I substitute store-bought Thousand Island instead?
A3. Not recommended—most have added sugar. Homemade keto Big Mac sauce is the way to go.
Q4. What is the shelf life of homemade Big Mac sauce?
A4. Store in the refrigerator for up to 1 week in an airtight container.
Q5. Does Big Mac sauce keep in the fridge?
A5. Yes — it’s ideal for make-ahead burgers, bowls, or salads.
Hi, I’m Candice Knauer!
I’m passionate about creating delicious, healthy meals that make the keto lifestyle simple and enjoyable. What started as my personal journey into low-carb cooking has grown into a collection of recipes that I love sharing with others who want to feel their best while still enjoying great food.