Caramel Apple Salad

1 container (8 oz) frozen whipped topping, thawed
1 package dry instant butterscotch pudding
1 can (8 oz) crushed pineapple with juice
3 cups diced apples
1 cup toasted pecans
1 cup marshmallows

Mix cool whip, butterscotch pudding and crushed pineapple with juice. Add apples, roasted nuts and marshmallows. Keep in refrigerator until ready to serve.