From Gossip Girl star and Chanel darling Blake Lively and Sprinkles founder Candace Nelson comes the perfect winter treat: The s’more cupcake. Dreamed up by Lively and baked by Nelson, the campfire-inspired confection is made of graham cracker-crusted Belgian dark chocolate cake, bittersweet chocolate ganache and marshmallow frosting. Proceeds from sales of the s’more cupcake, available through February 6, will benefit Oxfam, an organization that works with communities to fight poverty and injustice worldwide. So go ahead, indulge. 50 E. Walton St.