Yes, you can freeze this baked banana bread. First, make sure to completely cool the loaf of banana bread before covering it. If you cover the banana bread while hot or even warm, steam will make the bread soggy. Once cooled, you can place the bread in an airtight container or plastic bag. Then freeze it for up to 9 months. To thaw it, place it in the refrigerator for 24 hours to thaw.