Heat the oven to 180 C . Form cake stood with paper and smeared with melted butter on the sides. The chocolate was melted in a water bath or in a microwave oven. Sugar and butter soft beat with mixer until smooth cream. Add chocolate and slightly beaten egg and stir well. Add the flour and cocoa and mix until homogenous. Pour in the form and put to bake until firm slightly or 15 minutes. Prepare a mixture by the coconut milk is mixed with coconut and eggs and mix well. Pour over chocolate mixture and put to bake until golden. Remove and allow to cool completely. Prepare topping by first melting the butter and then add the chocolate. Stir with a metal spoon until mixture is smooth. Pour over cake and smoothed. Home in refrigerator to set the chocolate. Remove and release form.