- COMBINE butter, chocolate and brown sugar in a saucepan and stir over a medium heat until chocolate and butter have melted. Remove from heat, cool slightly and whisk in eggs. Add sifted flour, cocoa and baking powder. Stir until well combined then pour into a greased and base lined 28cm x 18cm slice pan.
- BEAT PHILLY, caster sugar and extra egg until smooth and creamy. Spoon randomly over chocolate mixture and swirl with the tip of a knife.
- BAKE in a moderate oven 180°C for 45-50 minutes or until cooked. Cool on a wire rack before cutting into 24 pieces.