In a medium bowl, whisk together the flour and baking soda. Set aside.
In a large bowl cream together the butter and the sugar over medium-high speed for 5 minutes
Add the egg and vanilla. Beat for 1 minute. Scrap down thebowl.
Add dry ingredients and beat just until the dough comes together.
Place dough into two rounds. Flatten slightly to create discs.
Wrap dough in plastic and refrigerate for at least 60 minutes.
Line 2 baking trays with parchment paper.
Working with one disc of dough at a time, roll one on alightly floured workspace.
Roll until ¼ inch thick. Cut and place on tray.
Place in the refrigerator for 15 minutes.
Preheat the oven to 350 F.
Bake cookies for 10-12 minutes. Cool cookies completely on a wire rack.