Easy to Suff Manicotti

1 package (8 ounces) manicotti shells
1 pound ground beef
½ cup chopped onion
1 jar (26 ounces) spaghetti sauce
14 pieces string cheese
1 ½ cups (6 ounces) shredded mozzarella cheese

Cook manicotti according to package directions. Meanwhile, in a large skillet cook beef and onion over medium heat until meat is no longer pink; drain. Stir in the spaghetti sauce. Spread half of the sauce into a greased 13x9 baking dish.
Drain manicotti; stuff each shell with a piece of string cheese. Place over meat sauce; top with remaining sauce. Cover and bake at 350 for 25-30 minutes or until heated through. Sprinkle with mozzarella cheese. Bake, uncovered, for 5-10 minutes or until the cheese is melted. Makes 6-8 servings.

--This is a favorite recipe, it is really quick if you just use bottled spaghetti sauce that has meat in it, then skip cooking the hamburger— It is a very quick fix on a busy night.