1. Preheat the oven to 350 degrees F.
2. In a large bowl with electric mixer or stand mixer with paddle attachment, combine dry ingredients. Add butter, egg and milk and mix until a soft dough forms.
3. Chill the dough in the refrigerator for at least one hour.
4. Dust your surface with flour and use a rolling pin to roll the dough to 1/4" thickness.
5. Use cookie cutters to cut shapes from the dough. Place the cookies on a parchment paper lined cookie sheet.
6. Bake until the cookies are lightly brown around the edges, about 7 minutes.
7. Place the cookies on a wire rack to cool.