Unsure where the recipe came from, but inexpensive and filling.
Preheat oven to 325 degrees.
Beat butter until light. Add powdered sugar and vanilla extract. Using a rubber scraper to stir, add flour.
Roll into small balls and flatten. Prick with fork. Or press into 8-inch square baking dish to a depth of ½ inch. Prick with fork.
Bake 20 to 30 minutes or until golden brown.