I'm thinking it would be fun to try this with other flavors as well, like butterscotch.
Pistachio Buttercream
Ingredients
1/2 cup butter, room temperature 1 package pistachio pudding (3.4 ounce package) 3 cups of confectioners sugar 5 tablespoons cold milk
Instructions
Put butter in stand mixer (or using hand held mixer) and beat on medium until creamy, about 1 minute. Turn off mixer and add all the pistachio pudding and 1 cup of confectioners sugar. Turn mixer onto low and incorporate all the ingredients. Alternating the milk with the remaining sugar, add a tablespoon at a time and a 1/2 cup of confectioners sugar at a time until all ingredients are incorporated.