In bowl of stand mixer fitted with paddle attachment, beat butter and both sugars on medium speed until light and fluffy, around 3 minutes. (iwasborntocook.com)
In bowl of a stand mixer fitted with paddle attachment, beat cream cheese alternative and shortening on medium speed until smooth. (cybelepascal.com)
Using the paddle attachment of a stand mixer whisk the eggs on medium - high speed for about 2 minutes. (abrowntable.com)