Cook pasta in salted water until al' dente. Drain.
Mix together ricotta cheese, mozzarella cheese, 3/4 cup Parmesan cheese, eggs, parsley, oregano, basil, salt, garlic powder & black pepper. Set aside.
Pour 1 jar of sauce in a lightly greased 13x9 baking dish.
Fill each shell with cheese mixture.
Place shell in dish on top of sauce - seam side up.
Continue with all shells. When dish is full, create a second layer. You can spread a spoonful of sauce over bottom layer of shells to prevent sticking.
Pour remainder of second jar of sauce over shells. Sprinkle with 1/4 cup Parmesan cheese.
Cover with aluminum foil and bake for about 30 - 35 minutes.
Notes
If you need a little something more than just cheese, try omitting a bit of the ricotta and adding in your favorites. Fresh chopped broccoli, spinach, mushrooms, peppers, browned ground beef, crab meat or crisp bacon.