In a large bowl, combine the drained pineapple and dry pistachio pudding mix.
Fold in thawed whipped topping, marshmallows and nuts until well mixed.
Refrigerate until chilled and serve.
Top with whipped cream and a maraschino cherry, plus additional nuts if desired.
The calories shown are based on the recipe serving 8, with 1 serving being 1/8 of the salad. Since different brands of ingredients have different nutritional information, the calories shown are just an estimate. **We are not dietitians and recommend you seek a nutritionist for exact nutritional information.**