If not using oven ready noodles, cook noodles according to the package. Drain.
Mix together ground meat with flavored breadcrumbs, diced onion, egg, and one cup of spaghetti sauce. Either make into meatballs and bake or brown the mixture in a frying pan.
Mash together the sausage and meat mixture.
Add 3 eggs and parsley to the ricotta cheese. Mix.
Layer ingredients in a 12 x 18 inch lasagna pan:
Sauce, noodles, ricotta cheese, meat, mozzarella, romano cheese. Repeat layers.
On the last layer: Add sauce, mozzarella, and romano cheese. Cover with foil.
Cook in oven for about 60 minutes at 375º. Uncover the last 15 minutes.