Lasagna Casserole

1 pound ground beef
1/4 cup chopped onion
1/2 teaspoon salt
1/4 teaspoon pepper, divided
1 pound shell pasta, cooked and drained
1 pound (4 cups) motzellera, divided
1-24 ounce cottage cheese
2 eggs, beaten
1/3 cup parmesan
2 tablespoons dried parsley flakes
1-26 ounce jar spaghetti sauce

Cook hamburger and onion until browned and onion is transparent. Drain. Sprinkle with salt and half of the pepper. Set aside. In large mixing bowl, combine pasta, motzerella, cottage cheese, eggs, parmesan, parsley and remaining pepper. Stir. Pour into a greased 9x13 pan. Top with beef and spaghetti sauce. Cover. Bake 350 degrees for 45 minutes. Sprinkle with the rest of motzerella. Bake, uncovered, for 15 minutes or until cheese is melted and bubbly. Stand 10 minutes before serving.