Place frozen nectarines, frozen banana, and coconut milk in a food processor or high-powered blender.
Process the nice cream for about 1 minute*, until the texture looks like creamy ice cream. You may have to stop processing the nice cream midway to scrape the ingredients down the sides once or twice. *Note: It will look like it's not going to turn into an ice cream texture, but it magically transforms at almost the minute mark of processing it!
Notes
*Note: The nice cream will look like it's not going to turn into an ice cream texture when you're processing it, but it magically transforms at almost the minute mark of processing it!Storage: Store leftovers in a freezer-safe airtight container for up to 3 months. Thaw: If you don't eat all of the nectarine nice cream the day of and end up freezing it, you'll need to thaw it at room temperature for it to soften up enough to eat it. You could also microwave it (if your ice cream container can go in the microwave) for 30 seconds to 1 minute to help it soften.