In a medium bowl whisk together flour and salt. Set aside.
Place butter into the bowl of your stand mixer, fitted with the paddle attachment, beat until smooth and light, about 40-60 seconds.
Add in the sugar and beat until smooth.
Gradually add the flour mixture and beat until you get a smooth dough.
Roll the dough between 2 sheets of parchment paper to 1/4 -inch thick. Transfer on the baking sheet and refrigerate for at least 30 minutes or until firm.
Meanwhile preheat your oven to 350 F
Remove the dough from the refrigerator and cut into bite-sized squares.
Bake the cookies for 10-12 minutes or until the edges are lightly browned.
Allow to cool completely before frosting.