SAUCE : Brown sausage in a large sauce pot.
Add onion and celery and cook until soft, 5 - 10 min.
Add garlic, parsley, salt, sugar, basil, tomato paste and water.
Bring to a boil, Simmer on low 2 hours, stirring occasionally.
LASAGNA:
Slightly cover bottom of pans with sauce (either 2 9x13 pans or 3 9x9 pans).
Layer cooked lasagna noodles.
Take a slice of mozzarella and using a butter knife spread a thin layer of ricotta on each slice and cover noodles.
Cover with a layer of sauce.
Repeat these layers until you fill the pan.
Sprinkle with parmesan and back at 325 for 45 min let rest 10 min.
If you are going to freeze the pans don't add the parmesan on top before you freeze. Add it right before you bake it.
If frozen bake at 325 about 75 min or until bubbling throughout.