Cook the manicotti in boiling salted water 15 to 20 minutes; drain. In skillet cook meat and onion in hot oil until meat is brown and onion is tender. Drain off fat and juices. Stir in cooking sauce, cinnamon, the 1/4 teaspoon salt, the nutmeg and pepper; set aside.
In saucepan, melt butter; stir in flour and the remaining salt. Add milk all at once; cook and stir until thickened and bubbly. Cook and stir 1 minute more. Stir half of the hot sauce into beaten egg; return all to saucepan. Stir in 2 tablespoons of the cheese.
To assemble, use a teaspoon to spoon meat mixture into shells. Place shells in single layer in a greased 10"x6"x2" baking dish. Pour sauce over manicotti. Sprinkle with remaining cheese. Bake, uncovered in a 350 degree oven for 20 minutes or until heated through. Makes 6 servings. NOTE: Ground round can be substituted in this dish.
