1 package (3.4 ounce size) instant pistachio pudding mix
6 drops green food coloring, optional
3 cups miniature marshmallows
1 can (20-ounce size) crushed pineapple, undrained
1/2 cup chopped pistachios or walnuts
In a large bowl, combine whipped topping, pudding mix and food coloring if desired. Fold in the marshmallows and pineapple. Cover and refrigerate for at least 2 hours. Just before serving, sprinkle with nuts.