How Many Syns In Jaffa Cakes? & Other Low Syn Treats!

Updated on 
7 March, 2022

Are Jaffa Cakes High In Syns?

Jaffa cakes are a favourite sweet snack for many of us and you can happily eat them while losing weight on the slimming world plan as long as your tracking their syns.

These Jaffa Cakes have 2.5 syns per cake making them low in syns and fine to eat within moderation on the slimming world diet.

Down below in our guide, we have discussed how many Jaffa Cakes you can eat on the slimming world plan, the syn values of all Jaffa Cake flavours, some low syn alternatives as well as an SW recipe to make your own one syn Jaffa Cakes at home!

How Many Jaffa Cakes Can I Eat On Slimming World?

At just 2.5 syns per Jaffa Cake, you could eat up to 6 cakes a day before exceeding your daily syn allowance making them a great low syn snack if you fancy something sweet.

We would suggest however eating Jaffa Cakes in moderation as they can be high in sugar, having nearly 6 grams per cake in them, the flavoured versions also have to vary syns.

Jaffa Cake Syn Values

Jaffa cakes now have a range of different flavours not just the original, therefore can vary in syns slightly, we've listed the whole range below to help you out.

  • Original Jaffa cakes - 2.5 syns.
  • Mcvitie's Jaffa Cake Jonuts Biscuits 4 Pack - 8.5 syns.
  • Mcvitie's Jaffa Cakes Cherry Flavoured Biscuits 10 Pack - 2.5 syns.
  • Mcvitie's Jaffa Cakes Passion Fruit Flavoured Biscuits 10 Pack - 2.5 syns.
  • Mcvities Jaffa Cake Bars 10 Pack - 5 syns.
  • McVitie's Jaffa Cakes Orange and Cranberry - 2.5 syns.
  • Mcvities Jaffa Blackcurrant Cake Bars 5Pack - 5 syns.

Low Syn Alternatives To Jaffa Cakes

If you are looking for some other low syn sweet treats which are similar to Jaffa Cakes, you are in luck, we've put together a list of best low syn alternatives below to add to your shopping basket.

  • Schar Gluten Free Jaffa Cakes 150G - 2 syns.
  • Tesco Jaffa Cakes 141G - 2.5 syns.
  • M&S Dark Chocolate Jaffa Cakes Twin pack - 2.5 syns.
  • M&S Peach & Passion Fruit Jaffa Cakes Twin Pack - 2.5 syns.
  • Bahlsen Messino Jaffa Cakes Dark Chocolate - 7 syns.
  • Tesco Jaffa Cake Bar 10 Pack - 6 syns.

Our SW Jaffa Cake Recipe

If you feel like some Jaffa Cakes, but don't want to waste syns, why not try making your own one syn Jaffa Cakes at home?

Our recipe below makes 12 cakes and there is only one syn per cake!


  • Two eggs.
  • 45g of self-raising flour.
  • A drop of vanilla extract.
  • Half a sachet of sugar-free orange hartley sugar crystals.
  • 10g of dark chocolate.
  • 3 spoons of sweetener of choice.


  1. To begin make up your orange jelly then place into moulds and allow to set until hard.
  2. Whisk your sweetener and eggs together in a bowl then fold in your self-raising flour and vanilla extract until combined.
  3. Grease a muffin tin, place the mixture inside each hole and bake for around 15 minutes until golden.
  4. Cool the cakes then place the jelly on top, melt your dark chocolate and drizzle on top, serve once set!

Last Words

To conclude, at just 2.5 syn a cake, Jaffa Cakes make a great SW friendly sweet treat to have on the plan and won't affect your weight loss when consumed within moderation. If you would like to save some syns however you can always check out our Jaffa Cake recipe above which only has one syn per cake!

Jennifer is a certified nutritionist and weight loss coach with a Master's in Nutrition from Cambridge. With over 10 years experience, she shares healthy recipes and science-backed slimming tips on SheCooksSheEats to help people reach their wellness goals. Jennifer stays up-to-date by regularly attending conferences and continuing her nutrition education. She aims to provide research-backed advice to inspire balanced, happy living.
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