Question: are pyrex pie plates freezer safe?
Answer: Or, if you baked a casserole in a Pyrex dish and wanted to freeze the leftovers, don't transfer the still-hot dish to the freezer. Instead, let the casserole cool to room temperature, then cover the dish, and store it in the freezer. ... Be sure to allow hot glassware to cool before washing, refrigerating, or freezing.