Preheat a waffle iron on its highest setting. Lightly spray with non-stick spray. Place all ingredients into the Vitamix container in the order listed and secure the lid. Start the blender on its lowest speed, then quickly increase to its highest speed. Blend for 60 seconds; or select the Purée program and allow the machine to complete the programmed cycle. Pour batter into prepared waffle iron and cook until golden brown, shortening or extending time as needed to cook thoroughly.