For best results, use high-quality, all-butter pie crust for a flaky and flavorful base. Adjust the amount of cornstarch depending on the juiciness of the blueberries; if they are very juicy, you may need a little more. Let the pie cool completely before slicing to allow the filling to set properly. This will prevent a runny mess. Serve warm or at room temperature with a scoop of vanilla ice cream or a dollop of whipped cream for an extra touch of indulgence.