Stuffed Shells with Ground Beef 18 jumbo pasta shells 1 lb lean ground beef 1 onion, chopped 1 clove garlic, minced 2 cups shredded Mozzarella cheese 1/2 cup seasoned bread crumbs 1 tbs parsley flakes 1 egg, beaten 32 oz spaghetti sauce 1/2 cup grated Parmesan cheese Cook pasta according to package directions, just until tender. Drain. Meanwhile, brown the ground beef, onion and garlic in skillet. Drain well. Add the Mozzarella cheese, bread crumbs, parsley, and egg. Stuff shells, set aside. Pour about half of the spaghetti sauce into the slow cooker insert. Arrange stuffed shells in the sauce. Top with the remaining sauce. Top with Parmesan cheese. Cover and cook on low 5 to 6 hours. Serves 4