When a marathon door closes, another one — vast and wide and inviting — opens. So many times, we feel empty in the days or weeks after we cross the finish line, so used to the schedule and the goals that without them an aimless restlessness takes hold. Me? Not this year. I am thrilled to have my mornings, my evenings, my weekends back. A week after finishing the 2015 TCS New York City Marathon, I felt a spark of inspiration. I felt clarity after months of cloudiness. I was back in the kitchen. After whipping up some old favorites (apple cider donuts, oatmeal muffins), I wandered the aisles of my local green grocer, cozied up in a sweater in the brisk weather I wished we had had for those 26.2 warm, humid miles the week before, dreaming of comfort, of fall flavors. And thus was born this creamy, sophisticated Pumpkin Butternut Squash Mac and Cheese.