1 can crushed pineapple (15 1/4 oz. to 20 oz.)
1 box pistachio Jello instant pudding
1 (8 oz.) Cool Whip, thawed
2 c. miniature marshmallows
1/2 c. pecans (optional)

In large bowl, stir pineapple and pudding until well mixed. Stir in Cool Whip. Add marshmallows and nuts. Refrigerate.