(A)
1/2 cup butter
1 egg, beaten
1 tsp vanilla
3 Tbsp cocoa
1/2 cup white sugar

(B)
 2 cup graham wafer crumbs
1/2 cup walnuts
1 cup fine coconut

(C) Filling:

1/4 cup butter
2 Tbsp custard powder
2 cup icing sugar
4/5 Tbsp cream/milk

Put all the (A) ingredients in a pot and mix & cook on low heat
until all is melted. Remove from heat and add all (B) ingredients
and Spread in large pan  & pound in.

Take all (C) ingredients and mix together & spread on top of
base. Melt 3 squares of unsweetened chocolate with 1 Tbsp of
Butter. Spread on top of the cake. Put it fridge to set.