Lace Cookies
These gossamer cookies have just enough flour in them to keep them from flowing off the cookie sheet. Butter, brown sugar, and oats undergo a transformative alchemy in the oven, spreading in all directions to become crisp, lacy, and tasting of butterscotch. Like snowflakes, they should be a winter phenomenon, as they will become totally limp in any but the driest weather. Roll and fill them, or let them cool flat for a simpler snack.