The first link I clicked on was this recipe on Allrecipes: http://allrecipes.com/Recipe/Potato-Lasagna/Detail.aspx
My adaptation changed it to:
6 medium yukon gold potatoes, thinly sliced (as thin as my mandolin could do)
3 medium carrots, shredded
2 leeks, chopped
1 bunch kale, chopped
8 oz fresh shitake mushrooms, chopped
1/4 cup shredded smoked Gouda cheese
1 1/2 cups shredded mozzarella cheese
1/2 cup shredded sharp Cheddar cheese
salt and pepper to taste
1 jar marinara sauce
Saute kale for 5 minutes with carrots, leeks, shitakes, garlic salt, pepper, and I tossed in some other pasta seasonings for good measure.
Lightly oil 9x13 casserole, layer two rows of potatos, lightly salt & pepper. Then put a layer of half of the kale mixture, a layer of 3/4 cup of sauce, and a layer of cheese. Then repeat again ending with cheese on top. Cover and bake at 350 degrees for 45 minutes (I did this on convection bake), and then 10 minutes uncovered. (I browned it under the broiler for a minute too. I think it could've baked another 5 minutes covered but I was getting impatient.)
I can definitely see how this could work with a whole slew of different vegetables in place of the veggies I used. The gouda, cheddar, mozzarella combo made for a really rich lasagna. I just happened to have the smoked gouda on hand so I used it. I am interested in trying it with a more traditional lasagna cheese concoction so it's not so heavy next time.