Put the cottage cheese in a mixing bowl. Sprinkle any flavor jello (gelatin mix) you like over the cottage cheese and mix well with mixer. Add a matching flavor of yogurt to that mix, then fold in the Cool Whip.
We love this with cherry, and lemon is good too. We've also made it with peach. As long as you can find both a Jello and a yogurt in the same flavor, it will work.