You can freeze both baked and unbaked galettes. Unbaked: Place unbaked galette on a baking sheet in the freezer for an hour. Remove and wrap in plastic wrap and then transfer to a freezer bag or airtight container. Unbaked galettes can last up to 1 month. To serve, thaw overnight in the refrigerator and bake as directed. Baked: Freeze a baked galette in an airtight container for up to 3 months. To serve, thaw overnight in the refridgerator. Rewarm as directed above.