Crispy Chocolate Mousse
These light cookies have the texture of brownie edges, crisp with a touch of chew and a surprisingly big chocolate flavor. They bake for five hours at 200°F (95°C) in order to achieve this texture. On the bright side, you can set a timer and forget about the cookies until they are done—although it’s hard to ignore them as the scent of chocolate slowly fills your home. Fortunately, they can be eaten as soon as you pull them from the oven.