In a blender, mix the frozen bananas with the dates if you are going to use, the milk and the vanilla extract.
Divide the mixture among four bowls.
Cover each bowl with the fruit following the colors of the rainbow.
Notes
This recipe is best when eaten immediately and tastes good with any type of fruit, feel free to change or omit any, you can sweeten with maple or cane sugar or not add any sweetener to the base of the bowl.