Before freezing a pumpkin pie, make sure it is completely cool before wrapping it. This helps to avoid steam getting trapped in the wrapper which can ruin the texture and taste of the pie.
After the pie completely cools, first wrap it in plastic wrap, and then wrap it in a second layer of aluminum foil. The foil keeps smells in the freezer from penetrating the pie. Place the pie on a flat surface in the freezer.
Another method for freezing pumpkin pies is to keep the filling and the crust separate. This helps prevent the crust from becoming soggy.