Homemade S'mores Tart

S’mores desserts are typically a little maximalist for my taste. But over the past couple of years I’ve been lucky to spend a portion of my time in the Hudson Valley, about ninety minutes outside of New York City, where, thanks to the regular occurrence of indoor and outdoor fires, I rediscovered my childhood love of classic s’mores. It got me brainstorming ways to translate s’mores into a more refined dessert, and since nothing is more refined than a chocolate tart, that became my starting point. The filling is a basic ganache lightened with whipped cream to give it a mousselike texture (a genius technique I learned from Dorie Greenspan, who uses it for the topping of her chocolate Lisbon Chocolate Cake). It’s set inside a thick graham cracker crust and topped with my homemade marshmallow (note that you should wait to prepare the marshmallow topping until after you’ve filled the tart)