Step 1 In the bowl of a stand mixer fitted with a paddle attachment, or in a large bowl using an electric mixer, cream together the cream cheese and butter. Add the sugar, salt and vanilla, and beat well.
Step 2 Add the flour, and mix until just combined. Remove the dough to a well-floured surface and roll into a ball. Cut the ball into quarters and wrap each piece in plastic wrap. Refrigerate to firm up the dough, at least 30 minutes (or freeze at least 15 minutes).