Cook shells according to packet directions. Place in cold water to stop cooking. Drain.
Mix together cottage cheese, mozzarella cheese, 1/2 cup Parmesan cheese, eggs and garlic powder. Rub the dried herbs in the palms of your hands to pulverize them, and stir into the cheese mixture. Stuff mixture into the shells.
Spread 1/3 of spaghetti sauce in the bottom of a 20x30cm pan. Place shells open side up and close together in pan. Spread remaining sauce over top and sprinkle with remaining 1/4 cup Parmesan cheese.
Bake at 180 degrees C for 25 to 35 minutes, or until bubbly. Let stand 10 minutes before serving.