Pistachio Fluff Recipe

Pistachio fluff is a light, creamy no-bake dessert made with instant pistachio pudding mix, a can of crushed pineapple with its juice, whipped topping and chopped pistachios. It takes 10 minutes to stir together and 1 hour to chill, and one batch serves 6 to 8. The whole trick is in the can: the pineapple juice is the only liquid, so it goes in undrained.

You will see it called pistachio pineapple fluff, pistachio pudding fluff, pistachio Cool Whip dessert, or green fluff salad. It is the same pale green bowl, and at a holiday buffet it sits happily between the side dishes and the desserts.

Pistachio Fluff Ingredients and Package Sizes

• Pudding: 1 box (3.4 oz) instant pistachio pudding mix
• Pineapple: 1 can (20 oz) crushed pineapple with juice, not drained
• Whipped topping: 1 tub (8 oz), thawed
• Nuts: ½ cup chopped pistachios, plus extra for the top
• Optional: ½ cup mini marshmallows, ½ cup cottage cheese, maraschino cherries
• Time and yield: 10 minutes prep, 1 hour chill, 6 to 8 servings

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Why the Pudding Mix Must Be Instant and the Pineapple Undrained

The pudding mix has to be instant, not cook-and-serve. Instant pudding thickens cold, as soon as it meets liquid. Cook-and-serve needs heat, so in a no-bake bowl it stays thin and gritty.

Do not drain the can. The juice from a 20 ounce can of crushed pineapple is exactly the liquid that dissolves the 3.4 ounce box of pudding and gives the fluff its tangy, sweet base. Drained pineapple leaves the pudding stiff and pasty. Adding extra juice from another can does the opposite and makes it soupy.

Thaw the whipped topping in the fridge, which takes about 4 hours. I once tried folding it straight from the freezer and it broke into icy pieces and lost its fluffiness.

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Folding Cool Whip Into the Pistachio Pudding Base

In a large bowl, stir the dry pudding mix into the pineapple and its juice until no powder is left. Give it a minute or two. The mixture thickens slightly and turns glossy and pale green.

Add the thawed whipped topping in two parts. Fold with a spatula, scraping down and turning the bowl, and stop as soon as no green or white streaks remain. Stirring hard knocks the air out and the fluff ends up flat and dense.

Fold in the chopped pistachios, plus the marshmallows and cottage cheese if you use them. Cover the bowl and chill for at least 1 hour so the pudding can set and the flavors blend.

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Pistachio Fluff With or Without Marshmallows and Cottage Cheese

Both add-ins are optional, and the base sets the same without them.

• Mini marshmallows (½ cup): add chew and a little more sweetness. Leave them out for a softer fluff that is closer to a pistachio mousse, and add a little more pistachio instead.
• Cottage cheese (½ cup): makes it creamier and slightly tangy, with a little protein, which suits a brunch table. Use small curd, or blend it smooth first if anyone at your table dislikes curds.
• Cream cheese: not part of this recipe, but if you like a cheesecake note, beat a few ounces of softened cream cheese smooth with the pineapple before the pudding mix goes in so it does not leave lumps.

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Pistachio Fluff vs Watergate Salad

They are close cousins. Both start with instant pistachio pudding, crushed pineapple and whipped topping. Watergate salad usually adds pecans or walnuts and always has marshmallows. This pistachio fluff uses pistachios for the crunch and makes the marshmallows optional, so it tastes nuttier and a little less sweet.

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Cool Whip or Fresh Whipped Cream in Pistachio Fluff?

I once made this with freshly whipped cream instead of store-bought topping. It tasted great, but it was less stable. It held for a few hours and then began to separate in the fridge by the next day. If you are serving right away, homemade whipped cream works. If the bowl has to wait overnight, use Cool Whip or another whipped topping.

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When Pistachio Fluff Turns Runny or Stiff

• Runny or soupy: cook-and-serve pudding, extra juice, or whipped topping that was still partly frozen. Chill it another hour. If it is still loose, fold in a few tablespoons of extra instant pudding mix.
• Stiff and pasty: the pineapple was drained. Stir in a few spoonfuls of pineapple juice or milk.
• Flat and dense: the whipped topping was stirred instead of folded. Fold in a little more whipped topping to bring back some lift.
• Weeping by day two: the marshmallows softened and released moisture. Stir gently and serve it that day.

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Making Pistachio Fluff a Day Ahead for Christmas

This is a good dessert to get out of the way the day before a holiday. Mix everything except the toppings, cover and chill overnight. Just before serving, scatter the extra pistachios on top and add the cherries. The nuts stay crisp, and the cherry juice does not run pink into the green.

Serve it within 24 to 48 hours. After two days the texture loosens, especially with marshmallows in it. Keep leftovers covered in the fridge and do not freeze it; it separates and turns grainy when it thaws.

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Serving Pistachio Fluff at a Holiday Table

Spoon it into small glasses or a trifle bowl, with chopped pistachios on top and a maraschino cherry on each serving. Red and green make it an easy fit next to a Christmas salad, a cranberry salad or an ambrosia salad. It is also good spooned over pound cake slices or tucked into crepes for brunch.

If you want more pistachio, the layered pistachio pudding dessert sets the same pudding mix over a shortbread pistachio crust and a cream cheese layer, and a pistachio pudding cake bakes it into a cake. For a richer no-bake bowl, try pistachio mousse with chocolate ganache, or for autumn the same method works as pumpkin fluff. Leftover nuts go well in homemade pistachio ice cream.

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Pistachio Fluff Quick Answers

Can I double pistachio fluff?

Yes. Double every ingredient and use a large trifle bowl or a 9×13 inch dish; it serves 12 to 16.

Can I use fresh pineapple?

Stick with canned crushed pineapple. The recipe depends on the juice in a 20 ounce can, and chopped fresh pineapple gives a different amount of liquid every time.