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Keto Caramel Slice

Keto Caramel Slice

Decadent, rich and satisfying, this Keto Caramel Slice recipe combines a crumbly biscuit base, luscious Keto caramel with a chocolatey ganache topping. Perfect for when those sweet cravings hit!

Also known as Keto Millionaire’s shortbread, this will become a regular recipe in your rotation.

Before you scroll to the recipe, below I’ve tried to answer any questions you may have, including storage tips, sourcing ingredients and substitutions  

If you make this recipe please leave a review ⭐️⭐️⭐️⭐️⭐️

Yes you read right – KETO caramel slice is here!

I have been searching for a recipe for a keto caramel slice since I first started on keto a few years ago, and every link I followed was a dead end.

There are a few websites promising keto caramel slice out there, but every link I clicked, the post had been removed!

I found a couple of recipes but they just weren’t rich and decadent enough.

Keto Caramel Slice Summary

  • Ingredient tips
  • Recipe tips
  • Substitutions and sweetener tips
  • Storage tips
  • How many carbs in Keto Caramel Slice

After experimenting with a number of different bases, caramels and chocolate ganache toppings, this is by far my favourite.

It is perfect if you like a rich, decadent flavour to your caramel slice. In some of these images I have made the chocolate ganache topping even thicker as that’s how I like my Keto Caramel Slice.

If you prefer a thinner layer you can melt your favourite chocolate without the cream and spread it evenly over the top.

Keto caramel slice

Ingredients for Keto Caramel Slice

These are all easy to source ingredients, with the most important one being the sweetener you use! Not all Keto sweeteners are created equal, so check out the tips below. You will need these simple ingredients:

The ingredients for Keto Caramel Slice are small, but the flavour is big! This Keto snack recipe uses Xylitol, almond flour, butter, salt, chocolate and cream.
  • Almond flour
  • Xylitol
  • Salt
  • Butter
  • Cream
  • Dark chocolate

As always, the quality of your ingredients is important here. Because it’s only a handful of ingredients, use good quality. I prefer the Lindt dark chocolate – when I’ve tried this recipe with baking dark chocolate the top ends up going grainy instead of glossy smooth.

Substitutions and Ingredient tips

Almond flour: For the biscuit base, you want to use fine, blanched almond flour or meal.

The terms are used interchangeably by different brands but just check it is all white in colour and not full of brown bits (which means the skins have been left on and it’s much coarser.

I’ve been using this almond flour from iherb lately and it works well.

Xylitol: Key to success with this keto caramel is using xylitol! Not all sweeteners will thicken into a caramel. I haven’t had any luck replicating this recipe using erythritol or stevia blends. There is no substitute for xylitol in this recipe.

They tend to either get that ‘cooling’ effect, or crystalise and make an unpleasant texture. Other blends don’t thicken at all. I use Now Foods Xylitol and have for years. Beware it is toxic to dogs!

Butter: Straight forward, but use a quality butter as this recipe uses quite a lot. I used to use Kerrygold before it got pulled fro the shelves so now usually use devondale. I use salted butter as I like my sweet dishes to be fairly salty, but you can use unsalted and then dial up the salt to your taste. For dairy free, substitute for a dairy free butter substitute.

Cream: Full fat or heavy cream is essential here to get that delicious flavour. I use Bulla or Devondale. You could make this dairy free by using coconut cream, but of course that would change the flavour.

Dark Chocolate: As you use quite a bit, use a good quality dark chocolate like Lindt. I use 85% or 90% if it’s on sale and love the dark chocolate contrast to the sweet caramel middle layer. You can use any dark chocolate you like to eat. If it’s too bitter, add an extra tablespoon of sweetener. You could also half the amount of chocolate and cream for the ganache, you can see from the photos it’s quite a thick layer!

Tips for making Keto Caramel Slice

While this recipe is relatively straight forward, theres a few things to watch out for to make sure you get perfect layers. I have included a photo of each step to making this Keto Caramel Slice Millionaire’s shortbread below to help deal with some of the common problems.

  • SWEETENER TIP: As above, make sure you’re using xylitol as I haven’t found another sweetener that caramelises the same way.

THE CARAMEL: When making the caramel, you want to continue cooking it until it gets lovely and golden brown like this:

Don’t leave it unattended as it can burn just like a normal caramel! Taste it as you go (careful, its very hot) and dial up the salt or sweetness to your taste. Once you’ve added your cream and continued stirring, it will thicken up to the point that it coats a spoon like this:

  1. If the caramel doesn’t thicken completely, you add a 1/4 teaspoon of xanthan gum to help it. It will set a little further in the fridge though. I like it a bit gooey.
  2. When making the ganache, keep a close eye on melting the chocolate in the microwave. If you take it too far it will burn and become a dry mess. Microwave until its just starting to melt and then stir it until it is melted and glossy. Once it gets to around this stage don’t microwave it anymore or risk burning it:
  1. You could also make the ganache over the stovetop, with a glass or metal bowl over a saucepan of simmering water. I find this more stress than the microwave though!

Storage Tips

Fridge: cut into individual squares and store in an airtight container. Layer between baking paper if your container is narrow. Eat straight from the fridge! I’ve also microwaved this and served with a little extra cream for a gooey, warm dessert.

Freezer: This recipe is perfect for freezing. Wrap individual squares in tin foil and freeze, to help avoid the temptation of having it always in the fridge.

How many carbs in Keto Caramel Slice?

As you will see in the nutrition panel below, this Keto Caramel Slice Recipe has 4 grams of carbs and 1 gram of fiber per square, so 3 gram of net carbs.

That assumes you cut into 30 squares, which will be pretty small squares but trust me, it’s so rich and indulgent you don’t need more!

As always, snacks on Keto should be limited to when you’re really craving – not every day. I tend to have 1 – 2 small treats a week now I am in maintenance mode for Keto. If we rely on snacks and sweet treats to get us through, we never break the dependence on snacks to get through the day.


Keto Caramel  Slice The search is over! This Keto caramel slice hits all the spots, with a buttery, biscuity base, a salty caramel and a decadent dark chocolate ganache. Small squares are essential, this is RICH and calorie heavy!

Other Keto Recipes You Will Love

If you’re craving a sweet treat or feel like baking, here’s some other delicious Keto Sweet Recipes that will satisfy your sweet tooth.

Keto Apple Rhubarb Muffins

Keto Apple rhubarb muffins

Keto Lemon and Poppyseed Muffins

Keto and Lemon Poppyseed Muffins 2

Keto Coconut Macaroons

Keto Coconut Macaroons


Keto Caramel Slice is the perfect decadent keto dessert or snack. With simple ingredients and completely worth the effort, this will become a go-to favourite in no time.

Keto Caramel Slice

Yield: 30 Squares
Prep Time: 15 minutes
Cook Time: 20 minutes
Passive Time: 4 hours
Total Time: 4 hours 35 minutes

The search is over! This Keto caramel slice hits all the spots, with a buttery, biscuity base, a salty caramel and a decadent dark chocolate ganache. Small squares are essential, this is RICH and calorie heavy!




  • 280 grams butter
  • 1 cup heavy whipping cream
  • 6 tablespoons xylitol

Chocolate Ganache

  • 200 grams dark chocolate, 70 - 80%, low sugar
  • 40 grams heavy whipping cream



  1. Preheat the oven to 180C / 356F and line a 20cm x 20cm tin with baking paper (or a half size if you are making a smaller batch)
  2. Combine the base ingredients well and press firmly into the tin in an even layer. 
  3. Bake for 10 - 12 minutes until just turning golden at the edges. 


  1. Meanwhile, in a medium saucepan, melt the butter and xylitol over medium-low heat.
  2. Continue melting, stirring occasionally, until it is a dark golden brown colour. The darker you get it - without burning - the richer the caramel taste will be. 
  3. Once golden brown, stir in the heavy cream and simmer, stirring regularly, for a further 7-10 minutes until the caramel has thickened and coats the back of a spoon.
  4. Let the caramel stand for about 15 minutes to cool, before pouring over the base. Refrigerate for at least 4 hours until the caramel is set.

Chocolate Ganache

  1. Once the caramel and base is completely cooled, prepare the ganache. Chop the chocolate roughly and put In a microwave safe ceramic or glass bowl with the cream. 
  2. Microwave on 50% power for 1 - 2 minutes, stirring every 20 seconds until the chocolate begins to melt. Continue stirring out of the microwave until it is evenly combined and glossy. Watch the microwave very closely to ensure it doesn't burn. 
  3. Spread the ganache over the caramel and refrigerate until set. Cut into small squares.
  4. Keep refrigerated or chop into small squares and freeze individually wrapped.
Nutrition Information:
Yield: 30 Serving Size: 1 grams
Amount Per Serving: Calories: 192Total Fat: 19gSaturated Fat: 10gUnsaturated Fat: 0gCholesterol: 40mgSodium: 85mgCarbohydrates: 4gFiber: 1gSugar: 1gProtein: 2g
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