Using a standing mixer, combine the butter, powdered sugar, heavy whipping cream, peanut butter and vanilla and mix on medium speed until smooth and creamy
Scoop into a container with a sealed lid and place into the fridge for up to 1 week or in the freezer for up to 3 months
Before using for cupcakes or to frost a cake, allow to thaw to room temperature and beat again to make creamy and thick