Cakespy: Nanaimo Bars

INGREDIENTS

• 1/2 cup (1 stick) butter
• 1/4 cup sugar
• 5 tablespoons cocoa
• 1 large egg, beaten
• 1 cup shredded sweetened coconut
• 1 1/2 cups finely crumbled graham crackers
• 1/2 cup finely chopped nuts (such as almonds or pecans)
• 2 tablespoons heavy cream
• 2 tablespoons Custard Powder (such as Bird's), or substitute pudding powder (instant)
• 2 cups confectioners' sugar, sifted
• 4 ounces chocolate, coarsely chopped
• 1 1/2 tablespoons butter