Add all of the ingredients with the exception of the ground cinnamon and cinnamon sticks to a high speed blender. Blend for 30-45 seconds until combined and a little bit frothy. If your blender has a "smoothie" function, use it.
Set up a fine mesh strainer over a large bowl, preferably one with a spout. Pour the blender mixture into the strainer and let it strain into the bowl.
Fill two rocks-sized glasses with ice cubes. Distribute the liquid into the glasses. Garnish, if desired, with some ground cinnamon and a cinnamon stick. Serve immediately and enjoy!
