Easy-to-Stuff Manicotti

(This recipe is from my Quick Cooking 2005 cookbook.)

So easy and really yummy!

1 pkg (8 oz) manicotti shells
1 lb ground beef
1/2 c chopped onion
1 jar (26 oz) spaghetti sauce
14 pieces string cheese
1 1/2 c (6 oz) shredded mozzarella

Cook manicotti according to pkg directions. Meanwhile, in a lg skillet, cook beef and onion over medium heat til meat is no longer pink; drain. Stir in the spaghetti sauce. Spread half of the meat sauce into a greased 9x13 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 degrees for 25-30 min or until heated through.

Sprinkle with mozzarella cheese. Bake, uncovered, for 5-10 min or til cheese is melted. Makes 6-8 servings.