Preheat oven to 350 F. Lightly grease a 12-inch pizza pan or cookie sheet. In a large bowl, cream butter & sugar until light. Add any flavorings. In another bowl, combine dry ingredients; gradually add to creamed mixture. Mix with a wooden spoon or hand mixer until well blended. Press dough into pan & prick with a fork. Bake 10-15 minutes until golden. Allow to cool completely.