Galaxy cake

Step into another world with this galaxy themed, fudgy chocolate, salted caramel and Mars bar cake. The perfect bake for stargazers and children alike!


  • 250g unsalted butter
  • 200g dark chocolate (70% cocoa solids)
  • 350g light soft brown sugar
  • 200g self-raising flour
  • 1 tsp bicarbonate of soda

  • ½ tsp salt
  • 4 large eggs
  • 300ml tub sour cream
  • 100ml strong hot coffee (double shot of espresso)

For the filling

  • 250g fun size bag of mini Mars Bars
  • 397g can NestlĂ© Carnation Caramel
  • 1 tsp flaky sea salt

For the icing

  • 400g unsalted butter, softened at room temperature
  • 800g icing sugar
  • 2 tsp vanilla bean paste
  • 4 tbsp whole milk

For the decoration

  • black, blue, purple and green food colouring gel
  • navy and silver lustre dust
  • edible metallic pearlescent white paint
  • silver pearl balls
  • thin paintbrush
  • cake scraper

Galaxy cake #cakerecipes


  1. Heat the oven to 180c/160 fan/gas mark 4. Grease and bottom line two deep 20cm spring form cake tins. Using the microwave on high, melt the butter with the chocolate in 30 second bursts until glossy and smooth. Alternatively melt in a bowl over a pan of simmering water. Leave to cool slightly.
  2. Combine the sugar and flour in a large bowl, getting rid of any lumps with your fingertips, then stir in the bicarb and salt. In a separate jug beat the eggs with the sour cream then pour into the dry ingredients and whisk until well combined. Scrape in the cooled chocolate mixture and beat until you have a smooth chocolatey batter. Stir in the hot coffee then divide the mixture between the tins and bake for 40-45mins until a skewer inserted in the centre comes out clean. Leave to cool in the tins for 10 mins then transfer to a wire rack to cool completely.
  3. Full instructions visit @bbcgoodfood