Preheat the oven to 350° and spray a large baking dish or lasagna pan with a non-stick cooking spray. Set aside.
To make the meat sauce, start with a large skillet, over medium-high heat. Heat oil, onions, and garlic for a few minutes, then add ground beef and sausage. Cook until meat is no longer pink and onions are tender. Drain grease, then return to pan.
Next, add tomato sauce, tomato paste, water, and seasonings. Bring to a boil. Cover, reduce heat to low, and simmer for 20-25 minutes.
While the meat mixture is cooking, using a large pot, cook pasta according to package directions for al dente, rinse, and set aside. Spray a large casserole dish with a non-stick spray then add a small amount of meat sauce to the bottom of the dish. After adding a layer of meat sauce to the bottom of the baking dish, add a layer of lasagna noodles.
Spread ricotta cheese on top of the pasta, add a layer of meat sauce and then sprinkle with Parmesan cheese. Next add mozzarella cheese and then repeat the layering process, ending with the remaining sauce then topped with mozzarella cheese.
To bake the lasagna, spray a piece of aluminum foil with a non-stick spray then cover the lasagna. Spraying the foil will help keep the cheese from sticking. Bake in preheated oven for approximately 50-60 minutes. Remove foil and cook for an additional 10 minutes.
Garnish with some parsley and serve this deliciousness with a glass of red wine.