Pour the Frappuccino into the pint container with the protein shake. Mix well. Taste for preference and add sweetener as desired.
Freeze the container on a flat, level surface for 24 hours or until frozen solid.
Remove from the freezer, run under hot water for 30 seconds, and take off the lid.
Place the container into the outer bowl of the Ninja Creami, then lock the outer bowl lid into place.
Secure the outer bowl into the Ninja Creami machine. Press the Lite Ice Cream button and allow the cycle to complete.
Remove the outer bowl and then secure it again in the machine. Press the Milkshake function.
If the ice cream is still powdery, add a splash of protein shake or coffee, add it back to the machine and press the re-spin button.
Scoop the finished frapp into a large cup with a straw and enjoy!