Ultra Moist Starbucks Chocolate Cake (Or Cupcakes)! You'll love this super moist, rich chocolate cake (or cupcakes) made with Starbucks coffee. The coffee enhances the fudgey flavor of this dessert, but does not leave you with a coffee taste. (I'm not a big fan of coffee, but I could eat this cake all day!) This is a simple, one-bowl recipe for cooks of all skill levels.