Ma's Chocolate Slice

Slice
150g melted butter
1 cup firmly packed brown sugar
1 egg, lightly beaten
1 tspn vanilla essence
1/2 cup plain flour
1/3 cup self-raising flour
1/3 cup cocoa
3/4 cup shredded coconut
1/2 cup extra coconut

Icing
1 1/2 cups icing mixture
1/3 cup cocoa 
1 tspn soft butter
1/2 tspn vanilla essence
boiling water to mix

1. Preheat oven to 180'C (160'C fan forced).  Grease and line a 20 x 30cm lamington tray.
2. Place melted butter, brown sugar, egg and essence in bowl.  Stir until well combined. 
3. Sift in flours and cocoa.  Add coconut and stir through. 
4. Pour into baking tray and bake for 20-30mins, or until firm to touch (surface may crack slightly while cooking).
5. To make the icing combine icing sugar and cocoa in bowl with essence and butter.  Gradually add boiling water, mixing with each addition, until mixture is desired consistency.  (I usually make the icing slightly runny for the slice)
6. When slice is out of the oven pour icing mixture over top while still warm and spread evenly.  Sprinkle with coconut and serve!