Best Ever Healthy Chocolate Microwave Mug Cake | Slimming World Friendly Recipe

This microwave Chocolate Mug Cake will become your new obsession; it’s the easiest and fastest way to make dessert for one or two, and you wont believe how delicious it is!  It is the perfect sweet tooth, late night kinda cake for only 2.5 Syns when following the Slimming World plan. 

Over the years, I’ve fallen victim to dry, dense, chewy and rubbery healthy mug cakes that promised to be delicious but are more like a chocolate flavoured omelette!

If you are craving a sweet chocolate treat don’t reach for a 5 Syn chocolate bar that will giving you no filling power whatsoever. Reach for this 2.5 Syn recipe that will keep you fuller for longer and seriously satisfy the craving!

Why you’ll love this recipe….

  • Tastes delicious
  • Very quick and easy to make
  • Low Syn
  • Healthy
  • Perfect for all of the family

Is this recipe Slimming World friendly?

Of course… 

  • 2 Syns for the Option Hot Chocolate
  • 0.5 A Syn for 1 Teaspoon of Flour

Low Syn serving suggestions….

  • Halo Top Icecream
  • Mullerlight Banana and Custard
  • Spoonful of Nutella
  • Fresh Strawberries or Raspberries

Batch Cook – Storage Information

  • Fridge: This cake tastes best straight away.
  • Reheat: This cake tastes best straight away.
  • Freezer: Not suitable for freezing.

Chocolate Microwave Mug Cake

Slimming World Syns: 2.5 Syns*
Weight Watchers Points: Coming Soon
Calories: 145
Course Dessert, Snack
Prep Time 5 minutes
Cook Time 1 minute
Total Time 6 minutes
Servings 1


  • 11g Options Hot Chocolate, Any Flavour (or 1 Sachet, Any flavour)
  • 1 tsp White Flour, Self Raising
  • 1 Large Egg
  • 2 tbsp Plain Quark
  • ½ tsp Vanilla Essence
  • 1 Level tsp Granulated Sweetener


  • Add hot chocolate, flour and sweetener into a microwave friendly mug.
  • Make a small well in the powder and add the egg, quark and vanilla essence. Mix well to form a paste.
  • Place into the microwave for 1 minute for a soggy gooey cake. Cook for a further 1 minute for a firmer cake.


*Slimming World Syns and Weight Watchers Points are all approximate and estimated by the team. They have not been verified by an official source.

Have you created this recipe?

Please let me know how it turned out! Leave a comment below or share a photo on Instagram tagging me at @fatgirlskinny__ and the hashtag #fatgirlskinny.


You may also like...

18 Responses

  1. Kayleigh says:

    Hello, is there a substitute for the quark? I want to like it but I’m really not a fan. I don’t if it means a few extra syns x

    • Fatgirlskinny says:

      The quark is being used to create a cake mixture, you cannot taste it in the cake, it is disguised very well.
      The same as you add egg but the mixture doesn’t taste of raw egg 🙂 Give it a try..
      Failing that you could try fat free natural yogurt but I cannot comment how it would work.

  2. Macy says:

    What sweetener can I use that I dont have to order off the internet. Is the sweetener even necessary?? Thx

    • Fatgirlskinny says:

      Hi there
      You can buy granulated sweetener in any standard supermarket.. i.e candarel, or supermarket own make.
      I would suggest using the sweetener yes

  3. Niki says:

    So we don’t have quark in supermarkets in New Zealand! What can be substituted?

  4. Clare Bowyer says:

    I made this tonight and had it on its own straight out of the mug and still a bit gooey. It was AMAZING, I loved it! Cant believe its only 2.5 syns!! Cant wait to try different serving suggestions and flavoured options.
    Thankyou for the recipe ? x

  5. Fiona says:

    Could I use 11g of cocoa powder instead of the options, thanks

    • Fatgirlskinny says:

      You are welcome to try but would need to Syn accordingly.. I don’t feel it would work out the same however. Options contains more than just cocoa powder. The other ingredients help this case to work.

  6. Kathy Honey says:

    Wow just had this for lunch, I enjoyed it

  7. Katherine Jarratt says:

    The options must make the difference I think. Used a different hot chocolate and it was still chocolate omelette. Much more anemic looking than the pics here. Not terrible but not sure it was worth the syns.

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.