Storage: You can store any leftovers in an airtight container in the fridge for up to 5 days.
Freezing: Place cooled oatmeal cups in a large freezer bag, and freeze for up to 3 months. When ready to eat, microwave each cup for 30-60 seconds, or until warm.
Let the oatmeal cups cool completely before removing, to ensure that they will hold their shape.