1. Add the Fairlife milk, chocolate protein powder, cocoa powder, peanut butter, maple syrup, vanilla extract, and salt to a blender. Blend until completely smooth.

2. Pour the mixture into a Ninja Creami pint container and do not fill past the max fill line.

3. Cover the pint with its lid and freeze on a flat surface for 24 hours, or until fully solid.

4. Remove the lid, place the pint in the outer bowl, and lock it into the Ninja Creami machine.

5. Run the Lite Ice Cream setting or the Ice Cream setting, depending on your model and preferred texture.

6. Check the texture after the first spin. If it looks crumbly, add 1 to 2 tablespoons of milk.

7. Run the Respin cycle until the ice cream is creamy and smooth.

8. If using chocolate chips or chopped dark chocolate, make a small hole in the center, add the mix-in, and run the Mix-In cycle.

9. Serve immediately for the best creamy texture.