Yes, you can freeze this falafel mixture for later. Be sure to form the balls or patties first, and arrange on a parchment-lined baking sheet. Then place the baking sheet in the freezer for 6 to 8 hours to harden. Removed from the baking sheet and transfer to an airtight freezer safe bag or container. Falafel keeps well in the freezer for about two months. To cook from frozen, place in the air fryer and cook at 400°F (205°C) for 12 to 14 minutes or until golden brown. If using an oven to cook from frozen, preheat your oven to 425°F (218°C) and bake for 25 to 30 minutes or until golden brown.