The pumpkin is roasted in the oven with thyme, cumin and paprika before marinating in lemon juice to give it a truly delicious flavor. Layered with fresh homemade pasta, baby spinach and almonds this vegetarian lasagna recipe is really, really gooooooood!! To save time simply use fresh store brought lasagna sheets, found in the cold section of your supermarket or simply pre-cook dried lasagna sheets instead.