If you love lasagna, I just stumbled across the best lasagna recipe ever, and you're not going to believe the star of the show. I discovered a secret that will put the fear of watery lasagna aside forever. Then place zucchini slices in the oven for about 10 minutes. ASSEMBLYOnce you remove the zucchini from the oven, it's time to assemble the lasagna. Place your zucchini slices slightly overlapping or right next to each other to cover the cheese mixture.