Prep Time 15 minutes mins
Cook Time 35 minutes mins
Resting Time 5 minutes mins
Total Time 55 minutes mins
Store leftovers in an airtight container in the refrigerator for up to 4 days. Reheat individual portions in the microwave with a splash of milk to bring back the creaminess. To reheat a larger portion, cover the casserole with foil and warm it in the oven at 325°F until hot. You can freeze baked portions for longer storage, then thaw overnight in the refrigerator before reheating.