The Snickerdoodle, an iconic, sweet, everybody's-Grandma-bakes-them cinnamon sugar cookie, has been a staple in American baking since the late 19th century. This oh so cinnamony flavor profile we all know and love is thought to have been brought to America by Dutch-German immigrants. The origination of the whimsical name for this cookie is a bit ambiguous. Regardless of its hazy rise to popularity, today's recipe will take the iconic cookie and bake it up, cinnamon sugar mixture and all, in 'muffin form.'