For this cake, I used a Good Food recipe, linked below. I highly recommend it, it turned out perfectly.
I wanted to top my cake with toffee crumble. However, I couldn't find it anywhere in the Cornish sweet shops. So instead I made it by blitzing twix's and then squashing the mixture into little clumps.
When the cake was cooling, I sprinkled the toffee crumble onto the cake. It was delicious!!!
http://www.bbcgoodfood.com/recipes/2988682/chocolate-orange-marble-cake
