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3 eggs, well beaten
3/4 c. evaporated milk
1/2 c. H2O
3/4 t. dry mustard
1 T. grated onion
3/4 t. salt
3 c. cooked macaroni
1 1/2 c. grated American cheese
1 No 1/2 can Star Kist Tuna
Mix all ingredients together and turn into greased baking dish. Bake in 375 F. until firm and light brown–about 1 hour.