Classic Lamingtons

You can make the cake part of the lamington from scratch if you'd like. Or, you could just go and buy yourself a 23cm (or similar) square sponge cake.

23cm square sponge cake or similar
4 cups icing sugar
1/2 cup cocoa powder
20g butter, melted
2/3 cup (160ml) milk
2 cups desiccated coconut

Cut the cake into 16 squares. Mix the icing sugar, cocoa, butter and milk in a saucepan. Place the saucepan over a pan of simmering water, and stir until the icing is of a coating consistency. Dip squares of cake in the icing, then into the coconut.