Unstuffed Shells with Butternut Squash and Tomato Pesto - Saucy, creamy, delicious unstuffed pasta shells with butternut squash and tomato pesto. Alternate title should read: Obsession with butternut squash. Also, this casserole thingamajig has something to say: Take a BITE out of FALL. Y'ALL! Happiest of Fridays, pals! How the heck are ya? Good, I hope? Happy