1In a small bowl, whisk together the yogurt and shake mix until completely smooth.
2Blend together the shake yogurt mix and frozen fruit until thoroughly mixed. (You may need to scrape down the sides of the blender cup once or twice.)
3Pour the blended fruity yogurt mixture into a bowl, cover, and place in freezer.
4Freeze 1-2 hours, until thickened to spoonable consistency.
5Spoon bite-sized dollops of the fro-yo onto a plate lined with wax paper or parchment paper.
6Put the plate in freezer and freeze again until fro-yo bites are firm, about an hour. (If you like, you can drizzle your bites with melted dark chocolate and freeze again for a few minutes.)
7Transfer to a plastic bag and store in freezer up to 3 weeks.