Black Bean and Green Chile Southwestern Gratin

I am a child of New Mexico. For me fall holds fond memories of crisp mornings full of hot air balloons, golden cottonwood trees along the Rio Grande, snow-capped Sandia Mountains and the aroma of fresh roasted green chile permeating throughout the state. Grocery stores, school fund raisers, restaurants and neighborhood backyards were all well-equipped with chile roasters. Friends and family would deliver their sack of freshly picked chilies and watch them toss amongst the flames just long enoug