These delicious banana muffins will stay tasty at room temperature (and covered in a dry, clean cloth) for a few days and good in the fridge for a week. What’s great is that these muffins are also freezer safe! Simply put them into a freezer-proof container and pop them in the freezer. They will stay good for up to 3 months! Want a tasty treat in the morning? Dethaw them in the fridge overnight and heat them up in the morning, delicious!