chocolate, Cupcakes, No Bake

Mars Bar Cupcakes


Rich and chocolatey. They are more like mars bar cornflake buns than cupcakes, as they aren’t actually baked. In short, very indulgent but easy to make and very popular.

The recipe is from one of my favourite books, ‘Cupcakes from the Primrose Bakery’. There are so many good recipes in this book. Anyway, the recipe uses Chocolate Buttercream to decorate the cupcakes. I had some of this buttercream leftover, from my daughter’s birthday cake, so it’s what prompted me finally trying this recipe. I’m not entirely sure, that I’d bother making buttercream just for these, but will include the link below, in case you want to. If you do decide, to make the (delicious) buttercream, halve the recipe as you don’t need a massive amount for this.

Chocolate Buttercream Chocolate Buttercream

We had some decorated and un-decorated cupcakes, sure we had to. My crew preferred un-decorated, as in just Mars bar cupcake, but it was a close call.



  • 50 g unsalted butter, at room temp
  • 2 tablespoons golden syrup
  • 260 g Mars Bars, chopped into 1cm squares
  • 150 g cornflakes


  1. Line a 12 hole muffin tray or three 12 mini muffin trays with appropriate size cupcake cases. * see tips below, for recommendations on case size.
  2. Melt the butter and golden syrup in a saucepan over a very low heat, stirring constantly.
  3. Add the chopped Mars bars and keep stirring until just melted.
  4. Remove from heat and gently fold in the cornflakes completely – although don’t mix too forcefully or you will crush the cornflakes.
  5. Press a spoonful of the mix loosely into each cupcake case and leave them to cool and set.
  6. If using buttercream – when they are completely cool, put a small amount of chocolate buttercream icing in the centre of each cupcake. If desired decorate with sprinkles too
  7. Should there be any uneaten, the cupcakes can be stored in an airtight container for 3 days.



Cakemum tips/Observations:

  • I didn’t want 12 whopper cupcakes, so instead of using muffin cases, I used fairy cases instead. It made around 24 regular sized cupcakes. The perfect size for us.
  • The cupcakes kept well. We ate some a few days later. I thought the cornflakes would be soft but they were still nice.
  • I used own brand mars bars as there were no offers on the real deal. On this occasion, I used Titan, from Aldi. They worked well and were a fraction of the price.

Happy Baking and #stayhome x

De (aka thecakemum)

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