Melt the cream cheese for 15 seconds in a large, microwave-safe bowl. Add the sugar, cocoa powder, peanut butter powder, and vanilla extract. Mix together until all ingredients are combined.
Add the milk and heavy cream and whisk to combine.
Transfer ice cream mixture to the Creami pint. Freeze for at least 24 hours.
Remove from freezer and process on the ice cream setting. If needed, add a splash of milk and reprocess.
If adding mix-ins, create a hold in the center of the ice cream, add the mix-ins, and use the mix-in feature on the Creami.
Notes
If you decide to use a different vanilla base, just make sure to add the cocoa powder and peanut butter powder to give it the peanut butter chocolate flavor and mix in before freezing.This recipe works with both the Ninja Creami and Ninja Creami Deluxe