Yes, tuna patties can be frozen for up to 3 months. If you are planning to freeze, cook the tuna patties according to instructions. Once golden and crispy, transfer the tuna to a cooling rack to cool. Once room temperature, place the tuna patties on a cookie sheet and freeze in a single layer for 4 hours before transferring them to a freezer-safe bag or container. This will help prevent the tuna patties from sticking together.