Parmesan Fish - cooking recipe

Ingredients

2 lb. fish, cooked in lemon, onions and salt
1 qt. milk
1/2 pkg. cornstarch, dissolved in milk
2 whole onions, chopped
4 oz. butter
Parmesan cheese

Preparation

Melt the butter and saute the onions.
Add the milk and cornstarch mixture; bring to a boil.
Let mixture thicken, stirring constantly.
Add the salt; it should get to the consistency of marmalade.
In a Pyrex dish, pour enough of the sauce to cover bottom of dish; place fish on top and sprinkle Parmesan cheese over this.
Repeat layers until you have used all the sauce.
Bake at 450\u00b0 until it is golden brown.
Serve with potatoes.