Add everything but xanthan gum in a blender or food processor (stick to the order listed) and blend until completely smooth. Add a pinch of salt and a drop of vanilla if desired. These are optional.
Step 2
Add xanthan gum and blend again until a very thick smoothie is formed. You could just eat this soft-serve honestly.
Step 3
Churn in an ice cream machine per machine instructions. See notes if you don't have an ice cream machine. Stir in optional mix-in if using.
Step 4
Eat like you would any light (high protein) ice cream, thaw for 5-10 min before scooping, etc. I just microwave for 5-10 seconds and it's perfect!