Cottage cheese bowls are best fresh and made at the time of enjoying but you can prep these a day in advance. It's best just to have the fruit prepped and stored in an airtight container in the fridge (separate from the cottage cheese). Then, all you have to do is simply add the ingredients that are already prepped. If preferred, you can go ahead and add the fruit to the cottage cheese in an airtight container or a tightly wrapped bowl. However, the fruit may get a little mushy.