1 jar (1 lb. 14 oz.) Prego spaghetti sauce
1 pkg. boneless chicken breast, skinned
1-1 1/2 c. mozzarella cheese

Place about 1/3 of the spaghetti sauce on the bottom of a baking dish. Cut up chicken breast (uncooked) and place on the sauce. Cover chicken with the rest of the sauce.

Bake at 350 degrees for about 20 minutes. Place the cheese on top and cook 20 minutes longer.