Instructions

1. Preheat oven to 180 C (350 F) standard / 160 C (320 F) fan-forced. Grease and line an 8-inch square pan with baking or parchment paper.
2. Place butter in a heatproof bowl. Heat in the microwave, stirring every 20 seconds, until melted and smooth. Add sugars and vanilla and mix to combine. Add egg and stir.
3. Sift in the flour, baking powder, cocoa powder and coconut and mix until combined.  Add the chocolate chips. Mixture will be thick and chocolate-y.
4. Place the chocolate batter into your prepared tin and press down to form one even layer. 
5. Bake in the oven for 20-22 minutes or until a skewer inserted in the middle comes out clean. Transfer to a wire rack to cool completely.
6. To make the frosting, sift the icing sugar and cocoa into a large mixing bowl. Add butter and 1 tablespoon of boiling water and stir to combine. If the frosting is too thick, add other tablespoon boiling water.
7. Spread frosting over cooled chocolate slice. Sprinkle over shredded coconut. Leave for 10-15 minutes to set. Cut into squares and serve.