Using an electric mixer, beat together the cream cheese and butter on medium-high speed until creamy, about 3 minutes, scraping down the bowl as needed.
Sift in the powdered sugar and cocoa powder, then add the salt.
Mix on low speed until well combined, scrape down the bowl, then increase to medium-high speed and beat until smooth and whipped, about 1 minute.
Add the vanilla extract and beat on medium-high for an additional 1 minute. Recipe: Natasha'sKitchen