Yes, these brownies freeze well! You can either freeze the batter before baking or freeze the brownies after baking. To freeze the brownie batter before baking, place the brownie batter inside a freezer bag. If you want to keep the batter flat and even, you can lay the freezer bag onto a flat sheet pan before placing it inside the freezer. Make sure to remove any air from the container. You can freeze the brownies for up to a year. To freeze baked brownies, you’ll need to allow them to cool first. Next, you’ll want to remove your brownies from the pan and then wrap them unsliced either in aluminum foil or plastic wrapping. You can freeze this for up to three months.