Bottom layer
1/2 cup unsalted butter
1/4 cup granulated sugar
4 tablespoons cocoa
1 egg, beaten
2 cups graham cracker crumbs
1 cup coconut

Melt butter, sugar, cocoa in double boiler. Add egg and stir until cooked and thickened. Remove from heat. Stir in crumbs and coconut. Press into an 8-inch square pan.

Middle layer
1/4 cup unsalted butter
3 tablespoons cream
2 tablespoons vanilla custard powder
2 cups confectioners' sugar

Cream ingredients together. Beat until light. Spread over bottom layer.

Top layer
4 ounces semisweet chocolate
1 teaspoon butter

Melt over low heat. Spread over top of bars. Cool in refrigerator.