Stuffed grape leaves can be stored in an airtight container for up to 5 days. You can reheat them in the microwave or on the stove. You can also freeze them uncooked or cooked. For both versions, place them in freezer bags and keep them for up to six months. Uncooked frozen stuffed grape leaves can be cooked according to the recipe, but they will take a little more time. Otherwise, you can defrost them in the refrigerator overnight and then cook them. For frozen cooked stuffed grape leaves, follow the same steps as for uncooked ones. Defrost them overnight and reheat them, covered, in the oven for 25-30 minutes at 350F. If you choose to reheat them from the frozen state, place them in the oven covered and reheat them for about an hour at 350F or until they are hot inside.