In a large pot over medium heat saute spinach, onion, oregano, basil and garlic in the olive oil. Pour in spaghetti sauce and water; simmer 20 minutes. In a large bowl mix cottage cheese, mozzarella cheese, Parmesan cheese, parsley, salt, pepper and egg.
Place a small amount of sauce in the bottom of a lasagne pan. Place 4 uncooked lasagne sheets on top of sauce and top with layer of sauce. Add 4 more sheets lasagne and layer with 1/2 sauce and 1/2 cheese mixture, lasagne and repeat until all is layered, finishing with sauce.
Cover with foil and bake in a preheated oven for 55 minutes. Remove foil and bake another 15 minutes. Let sit 10 minutes before serving.