Skip to main content
15Total Time
25Prep Time
40Bake Time

Chocolate Smarties Cake

6 Reviews

  • Vegetarian

About the bake

The base of the cake is a simple chocolate sponge cake which we've decorated with Smarties. Smarties are really easy to stick onto the cake because we've included a little golden syrup into the icing mixture. The smarties stick really well and don't bleed on the icing. Don't worry if you haven't got any Smarties, you can always use M&Ms or Skittles, just use your imagination. Lining up the Smarites in a uniform way across the cake makes for a lovely rainbow effect.

15Total Time
25Prep Time
40Bake Time


  1. Step 1:

    Preheat the oven to 180°C (160°C, 350°F, gas mark 4). Grease and line a 20cm square baking tin.

  2. Step 2:

    Mix the cocoa with the boiling water. Stir in the bicarbonate of soda and set aside to cool.

  3. Step 3:

    Whisk the eggs, sugar, oil and vanilla in a mixing bowl until blended. Fold in the flour and the cocoa mixture until smooth.

  4. Step 4:

    Pour into the tin and bake for 40 minutes until risen and firm to the touch. Cool in the tin for 10 minutes, then turn out onto a wire rack to cool.

  5. Step 5:

    For the icing, melt the butter and golden syrup together with 1 tbsp water. Beat in the icing sugar, to make a smooth icing. Add a little extra boiling water if needed. Spread over top and sides of the cool cake.

  6. Step 6:

    Decorate the top and sides with a pattern of Smarties and leave to set.


  • For the Cake

    • 75g Cocoa powder
    • 200ml Boiling water
    • 3 tsp Bicarbonate of soda
    • 4 Eggs
    • 370g Billington's Unrefined Dark Muscovado Sugar
    • 180ml Sunflower oil
    • 1 tsp Nielsen-Massey Vanilla Extract
    • 275g Allinson's Self-Raising White Flour
  • For the Decoration

    • 2 tbsp Cocoa powder
    • 50g Unsalted butter (softened)
    • 2 tbsp Silver Spoon Golden Syrup
    • 300g Silver Spoon Icing Sugar
    • 300g Chocolate decorations (approx 8 tubes)


  • 20cm square baking tin
  • Mixing bowl
  • Whisk
  • Cooling rack

Great recipes and more at

Exclusive gifts and kits to take your baking to the next level Competitions and baker of the month prizes More than 1,000 recipes to try.