1 (8 oz.) regular Cool Whip
2 c. yogurt (any flavor)
1 graham cracker or chocolate pie shell

Mix yogurt and Cool Whip, leaving some Cool Whip to put on top of pie later. Put mixture in pie shell. Put remaining Cool Whip on top. Add fruit, if desired. For example, strawberries on strawberry yogurt, raspberries on raspberry yogurt, lime slices on lime yogurt, or lemon slices on lemon yogurt.

Put in refrigerator for at least 4 hours, preferably overnight. Do not freeze.