Combine all the ingredients in the Ninja Crush Boss Smoothie Cup and blend until the mixture is completely smooth and free of chunks.
Spread some cookie butter along the sides of the pint before adding mixture
Transfer the blended mixture to a container and freeze it for about twenty-four hours.
Once frozen, process the mixture once on the light ice cream setting, then give it one more spin until it reaches a smooth and creamy consistency.
Top with crushed Biscoff cookies for added texture and flavor.
