Step 1

Preheat oven to 375°F. Grease 9x13 baking dish. Cook pasta 2 minutes less than al dente.

Step 2

Cook sausage and onion until meat is browned. Add garlic, then marinara. Simmer 10 minutes.

Step 3

Beat cream cheese, then blend in eggs, ricotta, sour cream, half the mozzarella, Parmesan, salt and pepper.

Step 4

Mix 1 cup sauce into cheese mixture. Stir in pasta. Transfer to baking dish, top with remaining sauce and mozzarella.

Step 5

Cover with greased foil, bake 20 minutes. Uncover, bake 20 more minutes until bubbly. Rest 10 minutes before serving.