DirectionsPreheat oven to 180C Lightly grease and line an 18cm x 28cm slice pan.
Combine butter, chocolate and brown sugar in a medium saucepan.
Stir over low heat until smooth and sugar has dissolved.
Remove from heat and cool slightly.
Whisk in eggs.
Sift in flour, cocoa and baking powder together.
Fold into chocolate mixture.
Pour into prepared pan.
In a small bowl, using an electric mixer, beat cream cheese and caster sugar together until smooth.
Dollop cheese mixture over chocolate mixture and swirl with a skewer.
Bake for 35-40mins, until cooked when tested with a skewer.
Cool in pan.
Cut into squares.