Freezing is an excellent option if you want to store veggie patties for a long period. Frozen veggie patties come in handy on hectic days as they require minimal prep time. Prepare a big batch, ensure the patties are completely cooled. Then arrange them on a baking sheet lined with parchment paper and place the tray in the freezer until they're firm. Once they're firm, transfer them to an airtight container or freezer bag. These patties can be frozen for up to 2-3 months.