Mix Together:

2 eggs, beaten	1 C. milk
½ C. water	1 TBS. mustard, prepared
1 TBS. onion, grated	3 C. macaroni, cooked
¾ tsp. salt	1 ½ C. cheese, grated
1 can tuna, drained

Place in greased baking pan. Bake at 375° until firm, light brown - about 1 hour