Combine dry ingredients in a mixing bowl. Set aside.
Cream softened butter and sugar until light and fluffy, about a minute. Slowly add egg, then vanilla, and mix until combined.
Mix dry ingredients into wet and combine until mixture just begins to come together. It will be crumbly. If it looks too crumbly, slowly add one tablespoon of cold water. Continue adding until mixture comes together but isn't wet.
Place dough on a piece of plastic wrap and shape into a large ball or log. Refrigerate for an hour.
Pinch off chestnut sized balls of dough. On a parchment lined baking sheet, roll cookies in 1" ball, press down slightly and bake at 350 for 10 minutes.
