Brown the sausage in a large skillet; drain and add marinara sauce.
With a fork, beat the eggs in medium bowl, then add ricotta cheese and 1/4 cup parmesan cheese.
Lightly grease two loaf pans with non-stick spray.
Layer the ingredients in each pan, beginning with sauce, then a noodle, the ricotta mixture, and then the mozzarella.
Reserve about 1 cup of the sauce mixture to spread on top, followed by additional mozzarella and remaining parmesan cheese.
Cover with foil.
To bake immediately - bake, covered in foil for 45-55 minutes, at 350 degrees; remove foil and broil for ~ 5 minutes.
To store - wrap foil in plastic wrap and seal tightly. Freeze. To bake, defrost overnight in the refrigerator, remove plastic wrap, and then bake as directed above.