Watergate Salad

2 packages pistachio instant pudding
2 - 20 oz cans crushed pineapple
2 cups mini marshmallows
1 cup chopped pecans
8 oz. Cool whip

Combine dry pudding mix, pineapple, marshmallows and pecans.
Gently fold in the Cool Whip.
Refrigerate 1 plus hours.