School Cafeteria Hamburger Sandwich Bake
50 Servings
2 oz. protein per serving
100 slices bread
3/4 c. butter
5 lbs. hamburger
3 c. onions, chopped
1 1/2 c. celery, chopped
1/4 c. mustard, prepared
2 lbs. cheese, shredded
3 c. (dry) eggs
3 qts. reconstituted milk
Spread half the bread slices with butter. Arrange in baking pans and
toast lightly in moderate oven, 350° F., about fifteen minutes. While bread
is toasting, brown meat with onion and celery. Mix in prepared mustard.
Spread meat mixture over toasted bread.Sprinkle shredded cheese on top of
meat. Cover with remaining bread slices. Combine egg and milk and pour
over bread. Bake in moderate oven, 350° F., about forty-five minutes.
Source: “The School Lunch” by Marion L. Cronan, 1962
(A guide to school lunchroom operation)