Author Kelley Epstein devised these bourbon-spiked treats to celebrate her love of whiskey. "Oatmeal crème pies are a favorite from my childhood and they get a grown-up twist with the addition of a shot of whiskey," she writes in her book, Après All Day. "It’s a natural pairing: One of my favorite childhood treats + my favorite liquor = my all-time favorite (adults-only) cookies!"