If you want to make your corn casserole in advance and serve it at a later time, then you can totally do that! Corn casserole can be served at a later day if you know how to properly store it. u003cbr/u003eu003cbr/u003eIf you store your corn casserole in an airtight container (or in the casserole dish covered with plastic wrap) in the refrigerator, then it will last for 5 to 7 days!u003cbr/u003eu003cbr/u003eThis means you can make your corn casserole a few days in advance and serve it later. Just remember to reheat your corn casserole before serving!