Preheat oven to 350 F. Grease a 9×9 baking dish and set aside. {A 12″x17″ half sheet pan works good for thinner slices, but as you can see I wanted 9 giant slices}.

In a stand mixer, cream the butter and sugar together and then beat in the eggs and vanilla on medium. In a separate bowl, combine all dry ingredients. Slowly mix in the dry ingredients and then add the milk. Mix just until combined. Pour into greased pan and bake for about 30 minutes, or until a toothpick inserted in the center comes out clean.