Storage Instructions:
Store unused tuna mixture in an airtight container in the fridge for 3 to 5 days. Or you may store it in the freezer for up to a week. If you are storing the tuna melt sandwich, it may be kept in the fridge for up to 2 days. Then, to reheat it, place it in the oven at 350 degrees to heat through. This will take about 5 minutes.