Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   2      cups          Macaroni
   6      tablespoons   Butter or margarine
     1/4  cup           All purpose flour
   3      cups          Milk
   2      cups          Sharp processed american -- cheese, shredded (8 
   2      cups          Tuna -- drained (6.5 or 7 oz
   2      cups          Tart apples, cored -- pared
                        diced
   2      tablespoons   Butter or margarine -- melted
     1/2  cup           Soft bread crumbs

Preparation:

Cook macaroni according to package directions; drain. In saucepan, melt 6 tb butter or margarine over low heat. Blend in flour and 3/4 ts salt. Add milk all at once. Cook quickly, stirring constantly, until mixture thickens and bubbles. Add cheese; stir until cheese is melted. Stir in tuna, diced apples and drained macaroni; turn into 12x7x2 inch baking dish. Combine melted butter and crumbs. Sprinkle on top of casserole. Bake in 350~ oven for 30 minutes, or until apples are tender.