1 baked pie shell
1 (3 o.) pkg. sweetened lemonade mix
1/4 c. water
1 (14 oz.) can condensed milk
3 tbsp. lemon juice
1 (9 oz.) container Cool Whip

Dissolve lemonade mix with 1/4 cup water, add milk and lemon juice. Blend well. Fold in Cool Whip. Pour into baked shell and put in refrigerator to set, at least an hour.