Yes, homemade pumpkin pie needs to be refrigerated once it has cooled to room temperature. Egg- and dairy-based “custard” pies like pumpkin are considered perishable and should not sit out for more than about 2 hours at room temperature to avoid bacterial growth.

How to store it

• Let the pie cool completely on the counter (usually up to 2 hours), then cover it loosely with plastic wrap or foil and place it in the fridge.

• Keep it refrigerated at or below about 40°F (4°C) and eat within 3–4 days for best quality.

Exceptions and store pies

• Many supermarket pumpkin pies contain preservatives that make them safe at room temperature until the “use by” date; follow the package directions in that case.

• Bakery or homemade-style store pies without preservatives should be treated like homemade and refrigerated after cooling.