Pour the blueberries, milk, creamer, and vanilla bean paste into a small blender and blend until all ingredients are well combined. Pour the mixture into a Ninja Creami pint container.
Freeze on a level surface for 24 hours. Your freezer should be between 9 and -7 degrees Fahrenheit. To avoid getting a bump on the top of the frozen mixture, freeze with the lid off of the container.
Process the Ice Cream
After 24 hours, remove the pint container from the freezer.
Place the pint container into the outer bowl of the Ninja Creami and then process on "ICE CREAM."
If the ice cream is dry or crumbly looking (like sand), pour in a tablespoon or two of milk and then re-spin. If the ice cream looks like little balls of ice cream, respin without adding liquid. You may have to repeat this process a couple of times.
Remove the pint from the machine and enjoy!
Video
Notes
How long can I freeze my ice cream?It depends. If you are keeping the ice cream in the Ninja pint container with the lid sealed tightly and are freezing it in a cold freezer (between 9 degrees F and -7 degrees F), your ice cream will keep for several weeks, even months. However, if you transfer your ice cream to another container or freeze it in a freezer that is not quite as cold (or that is accessed a lot/door opened and closed often), the lifetime of your ice cream will decrease greatly to just a few days and you will likely end up with freezer-burned ice cream.Can I use frozen fruit in the Ninja Creami?Yes, you can. But, frozen fruit either needs to be thawed out before using, blended with the other ingredients, or have a liquid, like dairy added to the pint to fill in all of the gaps. You cannot only use frozen fruit as it could damage the machine.