Add the cottage cheese, milk, sugar, cocoa powder, vanilla extract, and peeled and seeded avocado to a blender. Blend until smooth.
Pour into your Ninja Creami container. Mixture will be thick.
Freeze for at least 18 hours on a level surface in your freezer.
Remove from the freezer and process on the Ice Cream setting. If needed, add a splash of milk and respin until ice cream reaches your desired texture.
Notes
I like to run a little warm water along the outer edge of my container for 30-60 seconds to thaw.
If you want to increase the chocolate flavor, add an additional tablespoon of cocoa powder.
The chocolate avocado ice cream would be delicious with some chocolate syrup on top or topped with chopped hazelnuts.
When I make Ninja Creami recipes with cottage cheese, I always make sure to choose a brand I know that isn't sour or acidic, as that will make your ice cream taste a little sour.