The size of the pan does matter when you’re baking a dessert bread like this dairy free banana bread. This recipe calls for an 8½ by 4½ inch pan. If you use a 9 by 5 inch pan instead, the loaf will come out shorter, and the bake time will be less since you’re using a larger pan. As a general rule, the batter should fill the loaf pan about ⅔ of the way to the top of the pan.