These linzertorte cookies, especially in their original heart-shaped incarnation, are the perfect bake sale cookie. What makes the perfect bake sale cookie? Let’s not mince words: Looks matter. Of course, taste matters, too. But it’s a lot less likely that the 8-year-old coming out of the supermarket is going to insist that her parents buy a sandwich bag of lumpy, homely oatmeal cookies than a neatly wrapped cellophane package of crisp, jewel-like, enticingly heart-shaped biscuits. These cookies are not only beautiful, however, they’re also legitimately delicious.