Sugar Free Caramel Syrup pouring off a spoon into a small white bowl.
A super-simple 3 ingredient sugar free caramel syrup recipe. Perfect for low carb baking, keto sweets and serving with ice cream.

Keto Caramel Syrup

Serriously, this is the BEST Sugar Free Caramel Syrup! It is so easy to make at home. Rich and buttery, keto caramel using just 3 ingredients and only 1g net carbs per serving.

A homemade caramel syrup sugar free and perfect to use as a sauce for desserts, a syrup for shakes or a topping on desserts like our amazing New York Cheesecake, No Bake Keto Cheesecake or Protein Ice Cream.

Related Recipes: Salted Caramel Keto Ice Cream Bars / Keto Caramel Nut Chew Bar

The Ingredients

Skip down to the recipe card to see the nutrition facts and exact measures of ingredients needed to make this sugar free caramel syrup recipe.

Sugar Free Caramel Syrup ingredients in three bowls.

Keto Caramel Syrup is super easy to make at home. It is suitable for a low carb, keto friendly diet. It is both sugar-free and gluten free.

All you need are 3 ingredients

Cream – I use a thickened or heavy whipping cream rather than pure thin cream.

Butter – I just use regular salted butter.

Sweetener – I use allulose for this recipe. Its rich caramel color comes from using the right sweetener. Allulose is the ONLY keto sweetener that will caramelise and turn it into caramel. Other low carb sweeteners will recrystallise e.g. erythritol, monk fruit sweetener. Xylitol will make keto condensed milk which is great, but it will not caramelise.

What is Allulose?

Allulose is a naturally occurring sugar found in wheat, figs, raisins, maple syrup and molasses.

It is very close to the same level of sweetness and properties for baking and confectionary as regular sugar but without carbs. In its natural state, it is found in small quantities and is processed to resemble a regular-looking sweetener.

It is classed as a natural keto friendly sweetener and is not a sugar alcohol. Allulose is recognised by the FDA as a safe food. However, here in Australia and in some other countries has still not been approved by our food authorities.

I purchase allulose through iHerb as it is not available to me locally. I have used it in many recipes, but those have mostly had substitutions. Due to allulose’s ability to caramelise and not crystallise this recipe is suitable only with allulose as the low-carb sweetener.

Related Recipes: Keto Chocolate Ice Cream / Keto Frozen Yoghurt.

How to make Sugar Free Caramel Syrup

Cream butter and sweetener in a small saucepan with a white spatula.

Step 1. Add cream, butter, and allulose sweetener to a small saucepan over medium heat. Bring to a boil then turn down to a simmer.

caramel in saucepan with whisk

Step 2. Cook, stirring occasionally, for 40-50 minutes until mixture has begun to thicken. Remove from the heat and leave to cool at room temperature for 30-45 minutes. Pour into a jar or bottle and transfer to the fridge. The caramel will thicken more upon chilling.

Sugar free caramel syrup can also be mad in the Thermomix. I have made this many times in the Thermomix and it is so easy. The syrup will still be quite runny when the timer is finished, but it will thicken when cooled. See the recipe card for tips using your Thermomix or similar thermal cooker.

How To Serve Sugar Free Caramel Syrup

You can make and flavour this keto syrup quite a few ways. I know a lot of our readers love Skinny Syrups and Torani Syrups for their coffee and desserts, or Monin Sugar Free Caramel Syrup. In my opinion, this is better as it less expensive and more versatile.

Thin out the caramel over gentle heat or with a little warm cream or water if you want a thinner syrup.

For copycat Starbucks frappucinos or shakes try adding spice or spice blends like our Pumpkin Spice Blend to make Keto Pumpkin Frappucinos.

Sugar free caramel syrup for coffee – mix as much as you like in coffee to sweeten.

Mix with nuts, seeds or popcorn (not low carb) for a delicious sugar free sweet topping.

Cheesecake – mix the whole batch with 500g of cream cheese for the ultimate sugar free caramel cheesecake. Yummo, now there is a great idea!

Sugar free caramel syrup for ice cream – Pour warm over ice cream for an amazing sugar free fudge sauce better than McDonalds.

A bowl of Sugar Free Caramel Syrup with a dribble down the side of the bowl.

Frequently Asked Questions

Can I use erythritol or xylitol to make the syrup sugar free?

Erythritol will crystallise and go crunchy. Xylitol will make a syrup/sauce but the results are not a caramel but more thick creamy sauce.

How long will it last in the fridge?

I have kept mine up to 1 month in the fridge. In saying that it does depend on the temperature in the fridge and how often your fridge door is open (hello kiddos).

Can I freeze keto caramel syrup ?

Some say yes, I say just keep it in the fridge. It can separate when taken back out of the freezer.

More Recipes To try

Here are just a few of my personal favourite keto dessert recipes and some of our most popular sweets on The Hub.

  1. Chocolate Protein Brownies
  2. Keto Custard Tart | Easy Custard Pie
  3. Keto Cupcakes
  4. Keto Chocolate Ice Cream – No Churn
  5. Keto Egg Fast Shake – Salted Caramel
Sugar free caramel syrup being drizzled off a spoon by a womans hand.

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Sugar Free Caramel Syrup in a small white ribbed bowl with a matching spoon.

Sugar Free Caramel Syrup

A super-simple 3 ingredient sugar free caramel syrup recipe. Perfect for low carb baking, keto sweets and serving with ice cream.
5 from 62 votes!
Prep Time: 3 mins
Cook Time: 1 hr
Total Time: 1 hr 3 mins
Course: Desserts
Cuisine: Australian Keto, Ketogenic, LCHF
Diet: Diabetic, Gluten Free
Recipe Category: Low Carb
Calories: 228kcal
Author: Megan Ellam
Servings: 9 serves (450ml total)
Tap or hover over number to scale ingredients
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  • 450 g thickened or heavy cream
  • 140 g allulose
  • 70 g butter cubed



  • Add the ingredients to a small saucepan over medium/high heat.
  • Cook, stirring occasionally, for 40-50 minutes until mixture has begun to thicken. Cool and chill. The caramel syrup will continue to thicken with chilling time.


  • Insert whisk attachment. Add ingredients to mixer; cook 60 min/100℃/speed 2/MC off/simmering basket in place on lid. Cool and chill. The caramel syrup will continue to thicken with chilling time.


Allulose is the only sweetener I recommend for this recipe. Why? Erythritol or monk fruit/erythritol blends will crystallise upon cooling. Xylitol makes a great condensed milk recipe but doesn’t caramelize like allulose does.
A liquid allulose was also tested and made the sugar-free caramel slightly caramel but soft and would still be perfect to use in any recipe that would lend itself to the caramel flavour.
The syrup will still be a bit runny when it is cooked. Remove and chill.
To make keto vegan sugar free caramel syrup and dairy free swap whipping cream with coconut cream and swap butter with coconut butter or leave it out completely.
I have added more FAQs and tips in the post above should you need them. 
The recipe card highlights how easy it is to make sugar free keto caramel syrup in the Thermomix. When the timer is up, the mixture may still be runny but will thicken in the fridge or as it cools down.
Please note my recommendations of sweeteners.
This recipe yields approximately 9 serves. The actual number of servings will depend on your preferred portion sizes. 
To calculate the weight of one serving, prepare the recipe as instructed. Weigh the finished recipe, then divide the weight of the finished recipe by 9. The result will be the weight of one serving. 
Nutritional values shown are guidelines only. Actual macros may vary slightly depending on the brands and types of ingredients used. 
The recipe card instructions contain the most basic steps and ingredients list. If you have any queries, or quest

Your Own Notes


Serving: 1serve (50ml) | Calories: 228kcal | Carbohydrates: 1g | Protein: 1g | Fat: 24g | Saturated Fat: 15g | Cholesterol: 85mg | Sodium: 74mg | Potassium: 37mg | Sugar: 0g | Vitamin A: 930IU | Vitamin C: 0.3mg | Calcium: 34mg | Net Carbs: 1g
Tried this recipe?Mention @meganellam or tag #madcreations!

Share This Recipe


  1. 5 stars
    This keto caramel sauce looks terrific! I don’t think I’ve seen allulose in my grocery store but I can get it online.

  2. 5 stars
    This sauce is great for anyone trying to cut down on carbs and sugar and as someone who loves caramel, I’m definitely gonna have to try.

  3. 5 stars
    This caramel syrup looks finger licking good. I’ve never used or heard of allulose but need to source some asap!

  4. 5 stars
    This looks spectacular! I am thinking on top of some vanilla icecream, or even a drizzle on some toast. Nice and easy, can’t beat that!

  5. 5 stars
    I love caramel but tend to stay away from it because of the high sugar content. Using allulose is such a great idea! It tastes just like the classic I’m used to!

  6. 5 stars
    Okay, this is amazing!! I was thinking of trying to eliminate refined sugar for the new year, and this recipe came at the most perfect time. I am so excited to try this out 🙂

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