Preheat the oven to 375 degrees F. Cook Lasagna noodles according to package instructions. Once cooked, drain and set aside.
In a bowl, mix together ricotta cheese, Parmesan cheese, parsley, eggs, ground beef, and pepper until well combined.
Spread 1/2 cup of the spaghetti sauce in a 9×13 inch baking dish. Place half of the lasagna noodles over the sauce, followed by half of the cheese-meat mixture, then sprinkle with 1/3 of the mozzarella cheese.
Repeat layering again with the remaining ingredients ending with Mozzarella cheese. Pour the water over the lasagna and cover it with foil.
Bake in preheated oven for 40 minutes or until the cheese is melted and bubbly. Let stand 10 minutes before serving.