Prepare the Lasagna Noodles: Cook the lasagna noodles until al dente, then rinse and dry them.
Cook the Filling: Brown the ground beef or Italian sausage with onion and garlic, then add marinara sauce and simmer.
Prepare the Cheese Filling: Combine ricotta, mozzarella, Parmesan, egg, parsley, salt, and pepper.
Assemble the Rolls: Spread cheese mixture on noodles, top with meat sauce, and roll up.
Bake the Rolls: Cover with foil and bake until heated through and bubbly.
Serve and Enjoy: Garnish with parsley and Parmesan before serving.