Go get a graham cracker crust 3 things of yougurt (dosent matter what flavor, but I prefer key lime pie) and some whip creme. Put the yougurt in the crust, top with the whipped cream. If your craving chocolate, you can drizzle it over the whip cream, and inbetween that and the yougurt. After you put it all together put it in the freezer, and let freeze.

Its cheap, not horrible for you, and tastes freaking fantastic.