Like all the names of the desserts at Sugar, this one is a play on a literary work (André Gide's The Immoralist). The campfire favorite is made at once more refined and more scrumptious: Meltingly soft, homemade marshmallows are caramelized atop tender, crumbly chocolate sablé cookies. You will need to use a stand mixer to prepare the fresh marshmallows, and a kitchen blowtorch to caramelize them.