Thanksgiving Lasagna

About a year or so ago a wonderfully talented cook, Madelyn Hood, served Mark and I a wonderful dish of stuffed shells that had a delicious winter squash filling. She has since that time talked to me about a small catering she provided where the main dish was once again a pasta dish using winter squash (or was it pumpkin?). So I've thought about creating a pasta dish with winter squash for a while now. My family spreads Thanksgiving out over the entire long weekend. Didn't make it to Madison this year (though I managed to deliver a Bavarian Apple Torte and a Blackberry Pie to them) but we still had our small family gathering at home Thanksgiving Day, and then one with Mark's family at a gathering at his sister's in Indy on Saturday. I had made some Brie with caramelized onion fondue for day-long nibbling while dinner was made on Thanksgiving day. The following day I kept working on creating a recipe for a new lasagna for the Saturday gathering and decided to combine...