1 (6 1/2 oz.) can tuna
1 box macaroni and cheese
1 can vegetable soup
1 tbsp. mayonnaise
1/2 c. water
1 tsp. salt

Boil salted macaroni and drain. Make macaroni and cheese according to directions on box in casserole dish. Add tuna, vegetable soup, mayonnaise and water. Stir until mixed. Bake in 325 degree oven for 30 minutes.