Prepare Italian Tomato Sauce.
Preheat oven to 350°F. Cook pasta as directed on package. Drain and rinse with cold water. Lay flat on wax paper or foil to keep noodles from sticking together. Set aside.
Mix ricotta cheese, 1 1/2 cups of the mozzarella cheese, 1/4 cup of the Parmesan cheese, spinach, eggs, parsley, Italian seasoning, salt and pepper in large bowl.
Spread 1/2 cup of the sauce onto bottom of 13x9-inch baking dish. Top with 1/4 of the noodles, overlapping edges. Spread 1/3 of the cheese mixture over noodles. Top with 1 1/2 cups of the sauce. Repeat layers two more times, ending with a layer of pasta and 1 1/2 cups of the sauce. Cover with foil.
Bake 40 minutes. Remove foil. Top with remaining 1/2 cup mozzarella cheese and 1/4 cup Parmesan cheese. Bake 10 minutes longer or until center is heated through. Let stand 15 minutes before cutting. Serve with remaining sauce, if desired.