This recipe couldn't be any easier. And it's healthy!
1 17 oz container 0% Greek Yogurt (room temperature)
8 oz bitter sweet or semisweet chocolate (melted)
Melt the chocolate in the microwave for about 2 minutes - 3 minutes (stop every minute or so to mix) until just melted. Combine with room temperature yogurt and place into ice cream maker and freeze according to instructions until done.