Luby's German Chocolate Pie

INGREDIENTS

• 1 1/2 cups white sugar
• 2 tablespoons all-purpose flour
• 2 tablespoons cornstarch
• 2 teaspoons unsweetened cocoa powder
• 2 tablespoons water
• 1 1/2 tablespoons melted butter
• 2 eggs
• 1 (12 fluid ounce) can evaporated milk
• 3/4 cup flaked coconut
• 1/3 cup chopped pecans
• 1 teaspoon vanilla extract
• 1 recipe pastry for a 9 inch single crust pie