On Freezing Pies
Custard and cream pies do not freeze well, which unfortunately means that the requisite Thanksgiving pumpkin pie cannot be made ahead of time. However, fruit pies, especially unbaked ones, freeze beautifully, as do baked pecan pies and cheesecakes. To prevent sogginess, brush the bottom crust of fruit pies with egg white before adding the filling. Before freezing, wrap pies and cheesecakes securely in several layers of plastic wrap, followed by a layer of aluminum foil. Allow already-baked items to thaw overnight in the refrigerator before serving. To bake a frozen fruit pie, leave it at room temperature for 20 minutes to allow the glass plate to warm up, brush with beaten egg and sprinkle with sugar if desired, then bake as usual, adding about 20 minutes to the baking time.