NANAIMO BARS

Makes 36 squares

bottom layer
1/2 cup butter
1/4 cup sugar
5 tablespoons cocoa
1 egg, beaten
1 3/4 cups Graham crackers crumbs
3/4 cup fine coconut
1/2 cup finely chopped walnuts

second layer
1/2 cup butter
3 tablespoons milk
2 tablespoons vanilla custard powder
2 cups icing sugar

third layer
2/3 cup semisweet chocolate
2 tablespoons butter

bottom layer:
Melt butter, sugar, and cocoa in a heavy saucepan.
Add beaten egg and stir to cook and thicken. Remove from heat . Stir in crumbs, coconut and walnuts.
Press firmly into ungreased 9 by 9 inch pan.
Second layer:
Cream butter, milk, custard powder and icing sugar together well. Beat until light. Spread over bottom layer.
Third layer:
Melt chips and butter over low heat. Cool. When cool but still runny, spread over second layer. Chill in refrigerator. Cut into 36 squares.