How did these classic New England molasses-spice cookies come to be called “hermits”? Some say it’s because they kept well when hidden away on ocean voyages. Others think they resemble hermits’ robes. Let’s just chalk it up to the region’s wacky names. For instance, Rhode Islanders call milkshakes “cabinets,” and they don’t have a good explanation for that, either. Since my mother-in-law Dorothy (known as Dick) grew up in western Massachusetts, the heart of hermit country, these cookies may have been passed down from her mom. My husband usually beat his siblings to them, often stealing a couple right off the cooling rack. When he introduced me to these these tender bars—completely new to…