1 can (20 1/2 oz.) crushed pineapple
1 pkg. (3 1/2 oz.) pistachio Jello
1 1/2 c. mini marshmallows
8 oz. Birds Eye Cool Whip

Pour crushed pineapple into large mixing bowl, add contents of box of Jello. Stir until granules are dissolved. Add marshmallows and stir until mixed. Add Cool Whip until mixture is an even light green.

Best to take Cool Whip out of freezer before using, and prepare the day before serving. Also, I recommend using the brand names above.