Over medium heat in a Dutch oven, cook sausage, ground beef, onion and garlic until cooked through and meat is no longer pink.
If possible, chop the meat down with a hamburger masher.
Stir in crushed tomatoes, tomato paste, tomato sauce and water.
Add sugar, basil, fennel, Italian seasoning, one teaspoon salt, pepper and two tablespoons parsley.
Cover with lid and simmer ingredients for approximately 1 ½ hours on low.
In another stock pot, cook lasagna in salted, boiling water for 8-10 minutes.
(I cooked about 12 minutes).
Rinse noodles with water and lay out individually on waxed paper.
In a medium-sized mixing bowl, combine ricotta cheese, egg, remaining 2 tablespoons parsley and remaining ½ teaspoon sea salt.
Preheat oven to 375°.
To assemble casserole, spread 1 ½ cups meat sauce on the bottom of a deep-dish 9x13” glass baking dish.
Arrange 6 noodles lengthwise over top of the sauce.
Spread one-third of the ricotta cheese mixture over top of the noodles.
Top with 1/3 of the shredded mozzarella cheese.
Spread 2 cups meat sauce over top of the mozzarella cheese.
Layer with six noodles.
Spread one-third ricotta cheese over top of the noodles.
Then spread 1/3 of the mozzarella cheese over top.
Sprinkle with ½ cup parmesan cheese.
Spread 2 ½ cups sauce over that layer.
Cover with 6 noodles.
Spread remaining 1/3 ricotta cheese mixture.
Add remaining 2 noodles (if using).
Add remaining sauce and spread over top.
Spread remaining 1/3 mozzarella cheese over top of the sauce.
(I added an additional cup of mozzarella cheese as well.)
Then sprinkle with remaining parmesan cheese.
Cover with foil that has been sprayed with cooking spray so the cheese doesn’t stick to the foil.
(Or you can tent the foil over top of the casserole so that the cheese does not touch the foil and stick).
Bake at 375° for 25 minutes.
Remove foil and bake an additional 25 minutes.
Allow casserole to set up about 20-30 minutes before serving.