Chewy Sugar Free Keto Toffee Recipe (2025)

This chewy sugar free toffee recipe is so easy to make! It is buttery, contains the perfect amount of sweetness and is mixed with chocolate and toasted almonds. Only 1.8g net carbs and gluten-free.

Missing a good toffee? This keto toffee is going to satisfy those cravings and then some. Buttery and just on the right side of sweet, it won’t send your blood sugar levels soaring like the traditional stuff.

My sugar-free toffee is mixed with chunks of dark chocolate and topped with toasted almonds.

Cut it into cubes and store in a Tupperware for when you need a little pick me up.

This English toffee recipe is chewy rather than brittle. Despite that I'd still like to call it "English" because it was created right here in London.

In the UK, toffee can be both chewy and hard. It is more of a general term for all candy made with sugar and butter.

In the US, "low carb English toffee" is basically a buttercrunch that is topped with chocolate and nuts. It is a popular holiday candy.

Ingredients

You only need 6 ingredients to make this easy low carb toffee recipe:

Butter: The main ingredient. It should be unsalted.

Allulose: I chose allulose as my sugar free sweetener. Allulose is a rare sugar that is not absorbed by our bodies, making it zero carb. The benefit over erythritol is that it does not re-crystallise or get gritty. It's thanks to the allulose that this keto toffee stays chewy, smooth and creamy.

Salt and vanilla extract: For extra taste.

Sugar free chocolate chips: If you're based in the US, use Lily's or ChocZero. A dark chocolate with 90% cocoa solids such as Lindt is also an option. Or use my homemade sugar free chocolate chips.

Almonds: These should be chopped and toasted for extra flavor.

Instructions

This section contains step-by-step instructions and photos that show how to make this recipe. See the recipe card for full information on ingredients and quantities

Step 1: Add the butter, sweetener and salt to a pan. Heat over a low to medium heat. Stir frequently with a spatula, until the butter melts and the allulose dissolves.

Step 2: Continue heating, stirring occasionally, until the mix reaches 270°F and has turned a rich caramel color. Then, immediately remove from the heat and stir in the vanilla. Be careful - it will sizzle.

Step 3: Wait 2 minutes and pour the mixture into a baking tray lined with parchment paper.

Step 4: Wait another 3 minutes to cool, then sprinkle with the chocolate chips and allow to sit for 10 minutes covered with tin foil so the chips melt.

Step 5: Spread the melted chocolate chips with a spatula. This allows the chocolate to sink into the caramel mix...

Step 6: ...and sprinkle with chopped toasted almonds and an optional sprinkle of flaked sea salt.

Let the toffee cool to room temperature, then place it in the fridge to completely set. Cut into pieces and enjoy.

Top tips

Roast the almonds for extra flavor. Either pan roast (no additional fat needed) or roast in the oven. I roasted mine at 200C / 400F for 6 - 8 minutes.

Make sure you let the toffee cool to room temperature before you place it in the fridge. If the temperature difference is too sudden, you can get a thin buttery layer on top of the chocolate.

This does not happen at all when you use 1 cup of sweetener, by the way - I think the sweetener helps bind the butter. However, I still prefer using as little sweetener as possible over a sickly sweet toffee!

This recipe provides a chewy sugar free toffee. This is in part because of the allulose, but also because I used as little sweetener as possible. DO NOT use less sweetener than specified. I have tried that and it does not work.

FAQ

Variations

Change the nuts: Instead of the almonds you could use different nuts such as pecans, peanuts or hazelnuts - or even sugar free dried cranberries!

Dairy-free toffee: I don't think it's as easy as replacing the butter with vegan butter. A little internet research revealed that this will cause the mix to split - check out this post. I would probably try using half vegan butter and half coconut cream.

I made a great dairy-free keto caramel using all coconut cream, and I think if you were to continue reducing it you'd end up with a decent toffee.

Storage

Cut into cubes and store in the fridge for up to 2 weeks.

Alternatively, freeze for up to 3 months.

More keto candy recipes

Sweet tooth? Me too! Check out my new keto desserts cookbook for delicious sugar free dessert ideas.

Tried this recipe? Give it a star rating below!

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Recipe