1 (8 or 9 ounce) Cool Whip, thawed
1 small pkg pistachio INSTANT pudding
1 20 ounce can crushed pineapple with juice (use one in it's own juice, not heavy syrup)
1/2 pkg (10.5 ounce) miniature marshmallows

In large bowl, combine pineapple and dry pistachio pudding mix. Fold in thawed whipped topping and marshmallows until well mixed. Refrigerate until chilled and serve.

Yield - approx 12 servings.