Pumpkin pies do require refrigeration if not serving or eating them within 2 hours as pumpkin pies without refrigeration will spoil and grow bacteria.
A pumpkin pie can sit out at room temperature for up to 2 hours.
After 2 hours the pumpkin pie at room temperature can begin to grow bacteria and should be thrown out.
If not eating or serving the pumpkin pie within 2 hours it should be kept refrigerated or frozen.
When refrigerated pumpkin pie is usually good for 3 to 5 days although it may last a bit longer.
You can freeze the pumpkin pie if you want to keep it longer.
When frozen the pumpkin pie will last for 6 months to a year.
However the frozen pumpkin pie is best eaten within a few months of freezing it for the best taste and quality.
If your pie contains eggs or dairy products, the pie should be stored in the refrigerator and not left out at room temperature for more than two hours.
Pies that do not contain dairy products, such as fruit pies can be stored, loosely covered at room temperature for up to two days.
After baking, pie should be left at room temperature to cool for 2 to 4 hours.
Within 4 hours, the pie should then be placed in the refrigerator and covered loosely with plastic wrap.
Pie may be refrigerated for 2 to 3 days.