Preheat oven to 350 degrees F/180 degrees C. Line a 8 x 11-inch (20 x 30 cm) baking pan with parchment paper.
Sift flour, cocoa and granulated sugar into a large bowl. Stir in flaked coconut. Add melted butter and stir to combine.
Press into prepared baking pan and bake for 20 minutes. Remove from oven and set aside to cool.
Sift confectioners' sugar into a bowl. Pour in cream, butter and peppermint extract. Stir to combine. Pour over cooled base and set aside.
When set pour melted chocolate over mint filling. Refrigerate to set. Cut into slices and serve.
Makes 10 or more servings.
Source: Australian Women's Weekly
Date: May 25, 2005-Recipe revised on 8/19/06