Savory meat filled manicotti

8 ounces manicotti shells
1/4 tsp fennel
1/2 pound ground beef
1/2 pound ground pork
8 ounces mozzarella cheese, shredded
4 eggs, slightly beaten
1/4 cup seasoned dry bread crumbs
1/4 cup grated Parmesan cheese
3/4 tsp oregano
3/4 cup onion, finely chopped
1/2 tsp salt
1/8 tsp black pepper
14 ounces spaghetti sauce

1. Cook pasta according to package directions; drain. Cool in single layer on foil. Heat oven to 350 F. In large skillet, brown meat; drain.
2. Stir together meat, 1 cup mozzarella cheese, eggs, bread crumbs, Parmesan cheese, onion, oregano, salt and pepper. Fill each cooled pasta tube with about 1/4 cup meat filling. Spread thin layer of sauce on bottom of 13x9x2-inch glass baking dish. Place filled pasta in prepared baking dish; cover with remaining sauce. Sprinkle with remaining 1 cup mozzarella cheese and additional Parmesan cheese, if desired. Cover with foil. Bake 45 minutes or until hot and bubbly.