Pistachio Buttercream is a light and fluffy frosting made with just four simple ingredients, including a package of pistachio pudding mix. Be sure to try the buttercream on my Spumoni Cake.

Pistachio Buttercream

After attempting to make this frosting from scratch, I finally decided to use a packaged pudding mix. Pistachio Buttercream tastes delicious with a salt and sweet flavor in every bite. Again, I made this specifically for my Spumoni cake, but I can’t wait to try it on some of my other recipes like my vanilla wafers.

Pistachio Buttercream!

Pistachio Buttercream Ingredients

This creamy frosting can be made with just four simple ingredients.

Butter: Make sure the butter is at room temperature before making the buttercream.

Pistachio Pudding: You will just need a box of the dry pudding mix; no need to make the pudding.

Confectioners’ Sugar and Milk: The final process in this recipe is to alternate between adding the milk and remaining confectioners’ sugar until the buttercream reaches your desired consistency.

Spumoni Rose Cake!

How to Make Pistachio Buttercream

This pistachio buttercream is so easy to make and would be delicious on all flavors of cake, from chocolate cake to vanilla cake to strawberry cake! To make the buttercream, first, cream the butter for about a minute until creamy. You can use a stand mixer or a handheld mixer.

Once the butter is smooth and creamy, add the pistachio pudding mix and one cup of the confectioners’ sugar. Mix on low until the ingredients have been incorporated. Finally, alternate between adding a tablespoon of milk and 1/2 cup of sugar until the buttercream reaches your desired consistency.

Spumoni Rosette Cake!

Looking for More Buttercream Recipes?

Marshmallow Buttercream

Whipped Vanilla Buttercream

American Buttercream Frosting

Chocolate Buttercream Frosting

Pistachio Buttercream!

Pistachio Buttercream

Prep Time 5 minutes
Total Time 5 minutes
Pistachio Buttercream is a light and fluffy frosting made with just four simple ingredients, including a package of pistachio pudding mix.


  • ½ cup (1 stick or 113g) butter, room temperature
  • 1 package (3.4 ounces) pistachio pudding mix
  • 3 cups confectioners' sugar, divided
  • 5 tablespoons cold milk, divided


  • Add butter to the bowl of a stand mixer (or use a handheld mixer) and beat on medium speed until creamy, about 1 minute.
  • Turn off mixer and add all the pistachio pudding mix and 1 cup of confectioners' sugar. Mix on low until ingredients are incorporated.
  • Alternating the milk with the remaining sugar, add a tablespoon of milk at a time and a ½ cup of confectioners' sugar at a time until all ingredients are incorporated.

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Meet Amanda Rettke

Amanda Rettke is the creator of I Am Baker, and the bestselling author of Surprise Inside Cakes: Amazing Cakes for Every Occasion – With a Little Something Extra Inside.Over the course of her 15+ year blogging adventure, she has been featured in and collaborated with the Food Network, New York Times, LA Times, Country Living Magazine, People Magazine, Epicurious, Brides, Romantic Homes, life:beautiful, Publishers Weekly, The Daily Mail, Star Tribune, The Globe and Mail, DailyCandy, YumSugar, The Knot, The Kitchn, and Parade, to name a few.

Reader Comments

  1. I made this precisely according to the recipe and the icing was gritty. I’m thinking it’s the undissolved pudding granules and I even used a little more milk Than was called for.

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