This banana bread is actually better on day two. Wrap tightly in plastic wrap and store in an airtight container for up to 5 days. Freeze whole loaf or individual slices tightly wrapped in plastic wrap then foil for up to 3 months. Thaw at room temperature or pop frozen slice in the toaster. Use a kitchen scale for flour: 220 grams is perfect. Let the bread cool completely before slicing to avoid crumbling. Dairy-free: swap butter for vegan butter and yogurt for dairy-free yogurt or applesauce. Gluten-free: use a 1:1 gluten-free baking flour blend with xanthan gum.