Onion Soup Au Gratin

ONION SOUP AU GRATIN
In Casserole.

1 qt. stock seasoned with salt
1 full tablespoon Parmesan cheese
Salt and pepper
1 tablespoon butter
Toasted bread
3 onions, sliced thin

Fry onions in the butter, add flour and stock and cook
on stove for 1/2 hour or more. Sprinkle bottom of casserole
with Parmesan cheese, pour in stock. Sprinkle more cheese,
then place enough pieces of bread, thoroughly toasted or
browned in oven, to cover stock. Sprinkle more cheese on
toast and place casserole in oven for 1/2 hour or more.