New Jersey’s favorite cookie is back on grocery store shelves: Mallomars. Traditionally, Mallomars become available in stores on the first Monday after Labor Day each year. The cookies are sold until March—or until the 3-million-box supply runs out. Since their invention in 1913, Mallomars have become a staple in the New York Metro Area. Come … Continue reading Why Are Mallomars Seasonal? A Brief Look at New Jersey’s Favorite Cookie