Step 1

Place pineapple and juice into a large bowl. Stir in pistachio pudding mix and stir until juice starts to thicken.

Step 2

Fold in whipped topping and marshmallows until evenly distributed. Fold in pistachios.

Step 3

Cover and refrigerate for at least 1 hour to allow pudding mix to completely dissolve.

Step 4

Fluff with a spoon and garnish with additional pistachios before serving.

Step 5

Store leftovers in a tightly covered container in refrigerator for up to 2 days.