Anytime you have a sauce that you pour over flour or corn tortillas, the liquid can be absorbed into the tortillas. The longer the sauce sits on them before baking the greater the chance for soggy enchiladas.
To make it a freezer meal: wrap the pan of enchiladas without sauce tightly, pressing down to remove air. Pour cooled white sauce into freezer safe gallon sized bag.
Pre-baking the tortillas for this Creamy Chicken Enchilada recipe helps make them crispy before you add the sauce, getting you get that perfect, cream cheese enchilada every time.