Butternut squash and sage are a match made in heaven, and this lasagna recipe showcases their delicious combination. The sweet and creamy butternut squash is roasted until tender and then mashed to create a smooth puree. Fresh sage leaves are sautéed in butter until crispy and fragrant. The lasagna is assembled with layers of butternut squash puree, sage, and a cheesy béchamel sauce. The result is a comforting and flavorful lasagna that is perfect for fall or winter dinners.