Prepare the base recipe. In a blender or mixing bowl, combine pumpkin spice coffee creamer, vanilla protein powder, optional maple syrup, pumpkin pie spice, and vanilla extract. Blend until smooth to avoid clumps of protein powder or pudding mix.
Pour into a Ninja Creami pint container. Make sure not to exceed the max fill line. Secure the outer bowl lid.
Freeze overnight. This step is crucial for the formation of ice crystals that the Ninja Creami machine will shave down during the first spin.
First spin. Place the pint into the Ninja Creami machine, select “Lite Ice Cream” for a lighter, high protein ice cream consistency. After the first spin, the texture may be crumbly. Don’t worry — this is normal.
Re-spin. Use the re-spin function until you get creamy ice cream. For best results, scrape down the sides with a butter knife before spinning again.
Add mix-ins. If you’d like chocolate chips, graham crackers, or even crushed Biscoff cookies, make a small hole in the center of the creamy pumpkin ice cream, pour in your mix-ins, and use the “Mix-In” setting.
Serve and enjoy. Scoop into bowls or cones and top with a sprinkle of pumpkin pie spice for the perfect treat.