3 Syn a Slice Coconut and Lemon Curd Cake | Slimming World

If you’ve been following Slimming World for a while you’ll probably know that despite all efforts you never quite get an exact replica when it’s a low syn cake or dessert. Having said that, I think this 3 Syn a Slice Coconut and Lemon Curd Cake turned out pretty well and not too far off the original.

Coconut and Lemon Curd Cake

For the full list of ingredients and comprehensive instructions, please see the recipe card at the end of this post. Before you scroll, there’s important stuff in the blurb 👍

I came across the original recipe for this cake and it wasn’t very Slimming World friendly, so I decided to make a few changes to reduce the syn values.

I replaced coconut milk with low fat yoghurt, and I substituted half the honey for Sweet Freedom Fruit Syrup Dark, which is only 0.5 syns per teaspoon rather than 1 syn per teaspoon for honey.

Of course you can still use all honey if you want, just remember to syn it accordingly.

This 3 Syn a Slice Coconut and Lemon Curd Cake isn’t too dry and the texture is similar to a normal a sponge cake, but a little denser because of the coconut flour. It would also make an great base for other flavours so why not experiment a bit.

You can keep the cake in the fridge for a day or so, but it is best eaten as soon as possible.

Coconut Flour

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Coconut flour is great to use as a substitute for normal flour. Since Coconut Flour is rich in fibre, it absorbs more liquid than most other flours.

This means, you can reduce the amount of coconut flour (and also the syn value) when you swap with regular wheat flour. We use Sukrin Coconut Flour which you can buy here on Amazon.

3 Syn a Slice Coconut and Lemon Curd Cake | Slimming World

It’s important to note that not all coconut flours are the same. Different brands can vary in density and they can have slightly different absorption abilities. They can even have different syn values.

We only use Sukrin Coconut Flour, as we know it is 3.5 syns per 25g, and we know how much to use to create a recipe successfully.

You can use other brands but please remember to check the syn values and make any necessary adjustments to quantities.

What is Sukrin 1?

We use Sukrin 1 which is an all-natural granulated stevia sweetener alternative to sugar with zero calories. You can grab Sukrin 1 over onAmazon UK.

Syn Free Strawberry & Vanilla Waffles


Sukrin 1 doesn’t have that strange after taste that a lot of artificial sweeteners do! It also shares the exact same sweetness and weight to sugar – which makes it really easy to substitute in recipes like this 3 Syn a Slice Coconut and Lemon Curd Cake.

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We use also Sukrin Icing which is an all-natural granulated sweetener alternative to icing sugar with zero calories. You can grab Sukrin Icing over on Amazon UK as well..


Sukrin Icing doesn’t have that strange after taste that a lot of artificial sweeteners do! It also shares the exact same sweetness and weight to regular icing sugar – which makes it really easy to substitute in recipes like this 3 Syn a Slice Coconut and Lemon Curd Cake.

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If you are using a powdered sweetener, then please check how it compares to sugar. In some cases you’ll need to use less, as powdered sweeteners weigh less.

That being said you don’t have to use Sukrin – there are lots of other high quality granulated sweeteners available from the supermarket, such as Canderel Sugarly, and Natvia.

Whenever we need to replace oil in cooking we use Frylight. Perfect for everyday frying and cooking, it delivers exactly one calorie per spray, which makes it Syn free! The Coconut or Olive Oil flavours are ideal for this 3 Syn a Slice Coconut and Lemon Curd Cake recipe.

Frylight Find Out More

Synning the sweetener

As you will probably know last year Slimming World brought out some new recommendations regarding the syn value of granulated sweeteners. This means that:

Where there is 1 tbsp or more being used per serving they recommend you count 0.5 Syn per tbsp. If using smaller amounts, like a pinch or teaspoon, there’s no need to worry about Syns at all.

The recipe for this 3 Syn a Slice Coconut and Lemon Curd Cake uses 8 tablespoons of sweetener and is divided into 12 portions. That’s less than a tablespoon per portion, so there’s no need to add any syns on for the sweetener itself.

We received this information from Slimming World when the changes were made.

The Tin

We baked this cake in an 8″ loose base tin similar to this one

3 Syn a Slice Coconut and Lemon Curd Cake | Slimming World

Or if you prefer you could go for an 8″ silicone cake pan

3 Syn a Slice Coconut and Lemon Curd Cake | Slimming World

Finally, a pretty good alternative to honey or golden syrup is Sweet Freedom Dark Natural Sweetener , and it’s half the syns. Perfect for this 3 Syn a Slice Coconut and Lemon Curd Cake. You can buy it from Amazon

3 Syn a Slice Coconut and Lemon Curd Cake | Slimming World

Want to share your ideas and help inspire others?

We’ve had lots of new members on our Facebook group. If you haven’t joined yet go take a look. You wouldn’t want to miss out on the fun would you?

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You might even find some inspiration from our awesome members, and if you’ve joined already why not invite any friends. They may find it just as helpful?

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Pinch Of Nom Cookbook - preorder

The book will feature 100 recipes – around 80 of them BRAND NEW and not available anywhere else. Full colour photographs, hardback, a quality book that will stand up to frequent use!

Each recipe has been taste tested by twenty members of the Pinch of Nom community to ensure that they are amazing.

The book will be released on the 21st March 2019, and if you pre order now you won’t be charged until it’s released.

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3 Syn a Slice Coconut and Lemon Curd Cake

Votes: 6
Rating: 4.83
Rate this recipe!


Prep Time

Cooking Time

pieces 40 minutes 40 minutes



Slimming World 

146kcal 4

Smart Points (Flex/Freestyle)



Per pieces Per pieces Per pieces
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To make the Cake
  1. Preheat oven to 180°C Line the bottom of an 8" loose base cake tin, and spray with Frylight. Spray the sides of the tin as well
  2. Beat eggs, honey , Sweet Freedom Syrup, vanilla and yoghurt until well combined
  3. In another, dry, bowl combine all dry ingredients together
  4. Combine the wet with the dry ingredients, and stir until everything is evenly mixed.
  5. Allow it to sit for 2 or 3 minutes to let the coconut flour soak up some of the wet ingredients. the batter will be thick, but pourable
  6. Pour the batter into prepared pan. Bake in the centre of the oven for 35 - 40 minutes
  7. Allow to cool for half an hour before carefully separating the sides of the cake from the pan, then inverting onto a cooling rack
  8. The cake should cool completely before you cut it in half to layer it. Also, the flavour will be better when cold, so you can refrigerate it to get it cold before you add the curd
  9. When the cake is cold, cut it in half and sandwich it together with the Lemon Curd (you can mix the curd with some quark if you want to like we did) then spread the topping all over the top and sides of cake. Refrigerate to chill the cake
To make the Lemon Curd
  1. You can make the lemon curd in advance and keep it in the fridge for about 5 days
  2. Place the grated lemon rind and sweetener into a bowl In another bowl, whisk the lemon juice and eggs together, then pour the mixture over the sweetener
  3. Place the bowl over a pan of barely simmering water, stirring frequently until thickened (takes 5-8 mins)
  4. Allow to cool slightly, and then mix in the Quark / Fromage Frais, whisking until smooth
For the Topping
  1. Mix the Quark, Sukrin powdered icing and vanilla extract together until smooth. You can add some more sweetener if you like

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Syn values given are correct at time of writing but may not always be accurate.

This website is UNOFFICIAL and in NO WAY part of or representative of Slimming World. 

We aren’t trained by Slimming World nor authorised to give Slimming World advice. Any advice given here should not replace the advice of your Slimming World consultant.

Ideally, you should check with Slimming world for the most up to date Syn values using official resources such as; the Syns calculator, Syns Online on LifelineOnline or by calling the Syns Hotline on (0906) 851 8518.

Although pinchofnom.com attempts to provide accurate nutritional information, these figures should be considered estimates. Varying factors such as product types or brands purchased, natural fluctuations in fresh produce, and the way ingredients are processed change the effective nutritional information in any given recipe. Under no circumstances will pinchofnom.com be responsible for any loss or damage resulting for your reliance on nutritional information.

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  1. How long will this cake keep for and can it be frozen? There’s only me an my husband so I’d like to be able to store it for a couple of days!

    1. Hi Sue
      We’ve not tried, but it should work. However, Almond Flour isn’t anywhere near as absorbent as coconut flour so you may have to adjust the quantities, as well as the Syn values

  2. Hiya, I’m making this today but didnt manage to get my hands on the fruit syrup. Is there anything I could use as an alternative? Thanks, Amber xx

    1. Hi Amber
      You could use ordinary golden syrup, but it would increase the Syn value quite significantly. The fruit syrup is available from Sainsbury’s, Ocado, Waitrose, Amazon or Holland & Barratt. 🙂

    1. Hi Clair
      Yes, that should be fine. You’ll need to double check Syn values just in case there’s a difference, but they will be pretty close.

  3. Another great recipe. I’m working on the lemon Meringue pie using your lemon curd Hopefully Trying to get it more stabilised have you thought about this.

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Slimming World Recipes
A blog started by 2 chefs on their Slimming World journey, evolving into an epic adventure shared by many!