This is an oldie but a goodie from an old version of The Australian Woman's Weekly Cookbook.
1 Cup plain flour
1/2 Cup sugar
1 Cup coconut
1 Tbsp cocoa
185g butter
1/2 tsp vanilla
1 egg
Sift dry ingredients into a bowl, add melted butter, vanilla and egg. Mix well. Press mixture over base of greased slice tin. Bake in moderate oven for 20 minutes. Cool in tin. Ice when cold.
ICING
1 Cup icing sugar
2 Tbsp cocoa
30 g butter
1 1/2 Tbsp hot water
coconut
Mix first four ingredients together until smooth. Spread over slice. Dust with coconut.