Shiner Bock Cupcakes with Peanut Butter Cream Cheese Frosting are as decadent as they sound. Earthy and rich, this is no kiddie cupcake. Only grown-ups allowed. If you’re Texan, you know Shiner. Shiner, Texas, that is. Famous for one thing: Shiner Bock beer. Spoetzl Brewery, where Shiner Bock is brewed, has been in business since …