Blueberry pie is a popular dessert made primarily from fresh or frozen blueberries, sugar, and a pie crust. The filling is often thickened with cornstarch or flour to create a smooth texture. It is typically baked until the crust is golden brown and the blueberries are bubbly. This pie is enjoyed in many cultures and can be served warm or cold. It is often accompanied by whipped cream or vanilla ice cream for added flavor. Blueberry pie is especially popular during the summer months when blueberries are in season.