200g dark chocolate, broken into pieces
110g caster sugar
100g brown sugar
250mls warm water
340g plain flour
1tsp baking powder
2 eggs, lightly whisked
Preheat oven to 180°C. Grease your cake pan with melted butter.
Combine unsalted butter, chocolate, sugars and water in a heat resistant bowl or in the top of a double saucepan and stir over a saucepan of simmering water until melted and well combined. Remove from heat and stand until lukewarm.
Sift together the flour and baking powder, gently mix into the chocolate mixture with a whisk until thoroughly combined. Whisk in the eggs.
Pour mixture into the cake pan and bake for about 1hour or til a skewer inserted into the centre of the cake comes out clean.