How long does broccoli casserole last in the fridge as long as you keep the broccoli and cauliflower casserole in an airtight container in your fridge it will stay fresh for 3 5 days cook rsquo s note cheesy broccoli cauliflower casserole you can use either yellow or white extra sharp cheddar cheese in this recipe i used white.

Broccoli cauliflower casserole can be stored in the refrigerator for up to 4 days in an airtight container to reheat simply place it in an oven proof dish and heat in the oven at 350 deg f until warmed through to freeze place leftovers in a zippered freezer bag with the air squeezed out it will taste best if used within two months.