Super easy...thanks to a few short cuts!
1 small box instant pistachio pudding mix
1 medium can crushed pineapple, undrained
1 cup pecans, chopped fine
1 cup miniature marshmallows
1 large container frozen whipped topping, thawed
Combine pudding mix and pineapple with juice. Mix well. Add reamining ingredients and mix well. Chill.