Chocolate sponge with chocolate custard recipe | delicious. magazine

Ingredients

• 250g unsalted butter at room temperature, plus extra for greasing
• 200g golden caster sugar
• 50g soft dark brown sugar
• 4 medium free-range eggs, beaten
• 250g self-raising flour
• 1 tsp baking powder
• 2 tbsp dark cocoa powder
• 50g dark chocolate, grated
• 1 tsp vanilla extract
• 125ml whole milk, warm
• For the chocolate custard
• 300ml whole milk
• 300ml double cream
• 4 large free-range egg yolks
• 3 tbsp golden caster sugar
• 3 tbsp cocoa powder
• 1 tsp cornflour