Preheat oven to 375 and spray a 13 X 9 pan with cooking spray.
Cook rigatoni per package instructions.
Beat eggs. Stir in ricotta, parmesan cheese, and parsley.
To assemble, spread 2 cups of sauce to cover the bottom of the pan.
Place half of the cooked rigatoni in the pan.
Drop spoonfuls of the ricotta mixture over the noodles.
Layer with 1 cup of mozzarella cheese.
Pour remaining sauce and top with rest of the ricotta mixture and 1 cup of cheese.
Uncover and cook 35-45 minutes. Let stand 15 minutes.