Heat the oven to 350°.
In a 9 x 13 baking pan, Place one cup of pumpkin sage sauce in the bottom of the pan.
Place a layer of uncooked lasagna noodles on top of the sauce.
Spread a thin layer of the Ricotta mixture, about 2 Tablespoons, on each noodle.
Sprinkle 1/3 of the mozzarella shreds over the top of the noodles and ricotta.
Place slices of zucchini in rows on top of the mozarella.
Place a layer of spinach leaves, one leaf thick on top of the zucchini.
Place a layer of pumpkin sage sauce on top of the spinach layer.
Repeat the process by placing another layer each of the noodles, ricotta, mozzarella, shreds, zucchini and spinach to the pan.
Sprinkle the top evenly with remaining 1/3 of the mozzarella shreds , and the remaining parmesan. Place a layer of thinly sliced zucchini, and sage leaves,on the top to serve as decoration.
When the temperature reaches 350°, place the uncovered lasagna in the oven and set the timer for 60 minutes. Place foil over the top of the lasagna for the last ten minutes of baking.
Let cool for a half an hour before cutting.
Enjoy!