In a stand mixer fitted with a paddle attachment, whip the blueberry cream cheese on medium speed until creamy and smooth. This shouldn't take long and there will still be chunks of blueberries. Transfer to another bowl and set aside.

In the same stand mixer cream the butter on medium speed until it is light in color and smooth. This can take anywhere from 1-2 minutes depending on how soft your butter was.

With the mixer on low, add the powdered sugar one cup at a time. Scrape down the bowl as needed. Mix until fully combined.

Add the vanilla and mix at low speed until combined and then increase the speed to high and beat for 5 minutes.

Add the whipped blueberry cream cheese and mix for about 30 seconds on medium speed.