You can store banana nut bread safely in the freezer for up to six months. To freeze, make sure the baked banana bread is completely cooled before storing.
If you attempt to store the bread while it is still warm, the heat can transform into condensation drops that can make the bread soggy.
Use heavy-duty freezer foil to wrap the bread tightly. Place the wrapped loaf inside a freezer bag, and remove as much air as possible before sealing. This helps to prevent the loaf from drying out. You can also slice the bread before freezing and remove and defrost just one slice at a time as needed. If the bread is too dry after removing it from the freezer, you can use a glaze such as orange juice to add moisture.