In a food processor or blender, process the cantaloupe, banana, lime zest and lime juice for 1 to 2 minutes or until the mixture is smooth, scraping the sides as needed.
Add the stevia sweetener. Process for 15 to 20 seconds or until the mixture is smooth.
Pour the mixture into an electric ice cream maker. Freeze according to the manufacturer’s directions. Or place the mixture in a 1 – quart bowl. Freeze, covered, for 4 to 6 hours, or until frozen, stirring every hour.