100驳/3陆辞锄 plain flour, sifted
120驳/4陆辞锄 caster sugar
2 tbsp cocoa powder
icing sugar, for dusting
100驳/3陆辞锄 dark chocolate, chopped into small pieces
100驳/3陆辞锄 unsalted butter, softened, plus extra for greasing
cr猫me fra卯che, to serve
2 free-range eggs
2 free-range egg yolks