Whisk eggs in medium bowl. Whisk in ricotta cheese, Parmesan cheese, parsley and pepper. Fill pasta shells with equal amount of egg mixture.
Spread ½ cup (125 mL) tomato sauce in 9 inch (23 cm) square baking dish. Arrange stuffed shells in single layer on sauce. Pour remaining sauce over stuffed shells. Cover with foil.
Bake in preheated 350°F (180°C) oven until hot and bubbly, about 20 minutes.