Add all of the ingredients to a blender and blend until thick, creamy, and smooth (approximately 3 minutes). Scrape down sides of blender as needed.
Taste smoothie and add more sweetener, if necessary. If the smoothie is too thick for you, add some more milk. Smoothie is best served immediately, but will stay good in the refrigerator, covered, for one day.
Notes
Yogurt: use any yogurt you like. Vanilla or plain Greek yogurt, vanilla or plain regular yogurt, a non-fat or low fat. If you want to be sure you don't taste the banana, use a vanilla flavored yogurt.
Milk: use any milk you like-- cow's (any fat content), almond, soy, oat, etc.
Maple syrup: you can use this to taste if you want it more or less sweet.
Nutritional information: all nutritional values are approximate.
All nutritional values are approximate and provided to the reader as a courtesy. Changing ingredients and/or quantities will alter the estimated nutritional calculations.