Yes, they freeze just fine. I do suggest not adding the chocolate drizzle before freezing because it tends to fall off when moved around in the freezer. Make sure the brownies are completely cool before freezing. You can either freeze in a block or as individual brownies. For the best results freeze on parchment lined tray and then transfer to an airtight container for storage. This way the softer cheesecake tops won't get messed up.