Black Forest Pie

Directions

1. Preheat oven to 350°. On a lightly floured surface, roll dough to a 1/8-in.-thick circle; transfer to a 9-in. pie plate. Trim crust to 1/2 in. beyond rim of plate; flute edge. Refrigerate while preparing filling.
2. In a small saucepan, combine the sugar, cocoa and flour. Stir in milk until smooth. Add butter. Cook and stir over medium-high heat until thickened and bubbly. Reduce heat; cook and stir 2 minutes longer.
3. Remove from the heat. Stir a small amount of hot filling into eggs; return all to pan, stirring constantly. Fold in half of the pie filling. Pour into pastry shell.
4. Bake until filling is almost set, 35-40 minutes. Cool completely on a wire rack. Just before serving, top with remaining pie filling and whipped topping if desired.