The Pioneer Woman's butternut-squash mac and cheese was easy to make and the perfect combination of autumnal flavors.Nathan Congleton/NBC/NBCU Photo Bank/Getty Images; Erin McDowell/Business InsiderI tried making Ree Drummond's baked butternut-squash mac and cheese.The Pioneer Woman's recipe calls for roasted butternut squash, onions, and breadcrumbs.The recipe was tasty, though I found the onions more prominent than the squash.Fall isn't far aw…