FIRST LAYER:

1/2 c. butter
1/4 c. brown sugar
3 tsp. cocoa
1 egg, beaten
2 c. graham wafer crumbs
1 c. coconut
1/2 c. chopped walnuts

Combine all ingredients, put in 9 inch square pan and chill for 1/2 hour.

SECOND LAYER:

2 c. powdered sugar
1/4 c. butter
1/4 c. cream or milk
2 tbsp. custard powder

Combine all ingredients, beating until smooth and fluffy, then spread carefully on top of first layer.

THIRD LAYER:

3 chocolate squares (sweet or semi sweet)
1/4 c. butter, melted

Melt chocolate and butter together, then spread over second layer and chill. (Spread by tilting pan and shaking in all directions.) As this is a very rich square, it should be cut into small 1 inch pieces.