Place the crushed went-bix and melted butter in a bowl.
Mix well.
Add the cocoa, brown sugar, coconut and egg.
Mix until well combined.
Press the mixture into prepared tray.
Bake in a moderate oven for 15-20 minutes until firm to touch.
Once cool, top with chocolate icing and decorate with sprinkles or chocolate freckles.
Chocolate Icing
Mix the icing mixture, cocoa and butter until it comes to a smooth consistency. If you need to, add some boiling water to help it come together better. Spread over slice.
Nutritional information is an estimate and provided as a courtesy. The values may vary according to the ingredients and tools that are used. Please use your preferred nutritional calculator for more detailed information.