Preheat the oven to 350°F.

In the bowl of an electric mixer fitted with the paddle attachment, mix together the butter and sugar until just combined. Add the vanilla.

Sift together the flour and salt in a medium bowl. Add this mixture to the butter mixture. Mix on low speed until the dough starts to come together.

Turn out dough onto a surface dusted with flour and shape into a flat disk. Wrap in plastic and chill for 30 minutes.

Roll the dough out to 1/8-inch thick.