Combine all the ingredients in a high speed blender and blend until smooth. Pour and serve. Top with cinnamon and walnuts if desired.
Anytime bananas start to get really spotted and brown and black, I smash them up in an air tight container and store it the freezer. Anytime I need frozen banana, I scoop up what I need. This helps with the “banana bread” taste but if you only have fresh bananas, just slice up a 1/2 cup and freeze the slices.Use a plant based vanilla protein powder to make this vegan.You can also freeze this shake and it will still taste amazing. I freeze it, take it out to soften for about 15 minutes, and then eat it with a spoon.