You can make these coxinha chicken croquettes entirely through to the frying step. You can then store them in an airtight container in the refrigerator for up to 4-5 days. To reheat them, place in a 350 F degree oven for 10-15 minutes. You can also freeze them in an airtight, freezer-safe container for up to 6 months. To freeze, place the croquettes on a sheet pan in the freezer for 2-3 hours. Once frozen, transfer to an airtight container. From the freezer, place them in a 375 F degree oven for 30 minutes or until warmed through to the center.