In a mixing bowl, whisk together the heavy cream, whole milk, granulated sugar, vanilla extract, and salt until the sugar is dissolved.

Pour the mixture into an ice cream container and seal it.

Freeze the container for at least 4 hours or until solid.

Once the ice cream base is frozen solid, remove it from the freezer and let it sit at room temperature for about 10 minutes to soften slightly.

Place the softened ice cream into the Ninja Creami bowl and process according to the manufacturer's instructions until creamy.

If the ice cream is too crumbly, you can add a splash of milk and reprocess until the desired consistency is achieved.

Scoop the ice cream into bowls and enjoy immediately, or return to the freezer for later.