1 Syn Curly Wurly Brownies | Slimming World Recipe

I think everyone who is on Slimming World is always craving a sweet chocolate treat and I particularly crave brownies! I can highly recommend these Curly Wurly Brownies. They are absolutely delicious and cut into 18 pieces this makes each section just 1 Syn. The whole mixture is 18 Syns so divide how you wish. They make the perfect Easter treat or party food. Fab to take to your Slimming World meets too!

I always use this brilliant brownie tray from amazon here. It’s the perfect thickness for the brownies. Otherwise they tend to be a bit thin.

Update 30th January: A few people have been mentioning they are struggling to get the recipe to rise so I have revised it slightly by adding Greek Style yogurt which will react with the baking powder helping it to rise. So if you have made this recipe previously please note the changes.

Servings: 18
Syns: 1 Syn Per Serving


3 Medium Eggs
50g Self raising flour (8 Syns)
1 Tsp Baking Powder (1/2 Syn)
4 TBSP Fat free Greek Style yogurt
Options caramel hot chocolate sachet (1.5 Syns) (or Salted Caramel)
2 Tsp Cocoa powder (2 Syns)
2 Tbsp of Sweetener
2 Tsp of Vanilla Extract
1 x 26g Curly Wurly (6 Syns)
2 Tsp Water


  • Spray a Brownie tin with Frylight to avoid sticking and preheat your oven to 180c/Gas Mark 4/350f
  • Sift the flour and baking powder into a bowl, and mix together with the Options sachet, sweetener and cocoa.
  • Crack 3 eggs into a bowl and beat well until frothy. Add the eggs gradually to the flour mixture and beat well. Add water and vanilla extract.
  • Fold in the Greek Yogurt and then pour the mixture into the baking tray.
  • Break up the Curly Wurly into small pieces and add this to the mixture dotted about evenly. (This could be replaced with Rolos or left out to save Syns)
  • Place in the oven for 15-20 minutes or until crispy on top.
  • Slide a sharp knife into the middle of the mixture… if it comes out clean they are cooked. If the knife has some mixture on it.. place back into the oven for another 5 minutes.
  • Leave to cool before slicing into 18 sections.

Have you created this recipe? Don’t forget to tag me in your photos on Instagram 🙂 @fatgirlskinny_sw

Check out my followers creations 🙂


  1. What size tin do you use please? I tried them but they came out like rubber. I think they got overbaked because the batter was too thin in the tin. Thanks.

  2. very odd 🙁 I have seen some great pics on Instagram from others who have made them and theres been some great thick ones x

  3. I’ve made two batches of these in a 20cm square tin – the first had a salted caramel Options sachet in and tasted a bit artificial so in the second batch I swopped it for an extra 2 tsp of cocoa (an extra half syn across 18 slices) and it was even better.

    Froze the curly wurly bar and whacked it on the work top before opening which made it much easier to scatter!

    A great recipe and a quick lifesaver for when the chocolate cravings hit – thank you,

    1. Sorry the recipe changed a while ago to make it better and now it’s 18 syns so should be 18 sections to make them 1 Syn each. Thanks for pointing that out to me

  4. Just tried to this recipe. Was really looking forward to it but it has turned out dry and flat as a pancake. I followed the recipe exactly. So disappointed ☹️

    1. Hiya Emmy
      As you can see from my user photos at the bottom.. my followers are having great success with this recipe and I make it at least once a week… did you use the baking powder?

      1. No absolutely not… the yogurt is used for a reason. It reacts with the baking powder to help it rise 🙂

      2. Yes I do hun, i use the original recipe from years ago that asks for quark. Mine have always turned out big and fluffy, like I said I put in 2 tsps of baking powder instead, hope this helps ?

  5. I made these today and they are fab… ok I couldn’t taste the chocolate that much but you could always add more coco power for extra Syns. ☺️ I cut mine into 12 so worked out at 1 1/2 Syns each ☺️

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