Chestnut- and Apple-Stuffed Squash

One of life’s cold-weather pleasures is roasted chestnuts, usually available fresh in markets for only a short time each year. For preparation instructions, see Fresh Chestnuts. For more convenient year-round choices, shelled chestnuts can be found at well-stocked supermarkets and gourmet shops, but they can be quite expensive. If you live near an Asian market, look for shelled roasted chestnuts in shelf-stable bags—that’s where I get mine for about a