Put the banana slices into a Ninja Creami pint container, add the chocolate Premier Protein shake.
Add the extract and pudding mix. Stir to combine, making sure that the ingredients stay below the max fill line.
Place the pint on a flat, level surface in your freezer and freeze for 24 hours or until solid.
Once frozen, remove the pint from the freezer and let it rest at room temperature for 10-15 minutes or run it under hot water for 30 seconds.
Take off the lid, place the pint into the outer bowl of the Ninja Creami, and lock the outer bowl lid into place.
Secure the outer bowl into the machine, select the Lite Ice Cream mode, and let the Ninja Creami work its magic.
When the cycle is complete, check the texture. If it’s powdery, press the re-spin button.
While the ice cream is spinning, chop up the walnuts and chocolate chips.
Once creamy, make a small hole in the center and add the mix-ins.
Press the Mix-In button and let the machine incorporate everything.
Add more walnuts, chocolate chips, and slices of banana on top, grab a spoon, and enjoy!