Fat Free Dessert Pie

I like the pie because it's fat free and it takes 5 minutes to fix. A friend from england sent to me.

Mix box of jello with 1 / 2 cup boiling water mix in yogurt and cool whip.

Fold , place into pie shell and refrigerate till sets about 1 hour', you can't tell this is fat free yum !"]".

plain fat-free yogurt, jello gelatin, fat-free cool whip, fat-free graham cracker crust