This unique lasagna recipe features the sweet and nutty flavor of butternut squash combined with the earthy aroma of sage. The butternut squash is roasted until tender and then mashed to create a creamy filling. Layered with lasagna noodles, a savory béchamel sauce, and a sprinkle of Parmesan cheese, this lasagna is a delightful combination of flavors. It's the perfect dish to enjoy during the fall season.