Combine the chocolate milk, half and half, and creamer in a medium-sized bowl.
Put the bowl in the microwave and heat on high power in the microwave until milk is hot but not boiling. (Approx 2 minutes.)
Remove from the microwave and immediately add contents of hot cocoa packet.
Whisk well until fully combined. (Heating the milk first helps the cocoa combine!).
Pour fully combined mixture into Creami pint and cool in the refrigerator for 10 minutes.
Give it one more quick whisk and then place the mixture in the freezer for 24 hours.
Put the pint container into the Ninja Creami machine and process on Ice Cream.
Once the process has completed, remove the pint from the Ninja Creami machine.
Serve with a sprinkling of mini marshmallows if desired.
Notes
The cozy taste of hot cocoa in a frozen treat! This came out perfect for me on the first spin. I used vanilla-flavored creamer. Next time I think I will use peppermint mocha though!