This delicious smoothie comes from Ellie Krieger's "So Easy" Cookbook. I make it for my teen daughter to take with her on her way to school. I really have to whir the blender to get the frozen bananas incorporated, so next time I plan to cut my bananas into smaller chunks before I freeze them. I also halved the recipe and still came out with two decent sized smoothies. I think a full recipe would make three large smoothies.