Fish Souffle(Fiskegrateng) - cooking recipe

Ingredients

1 1/2 lb. cooked, boned fish fillets (cod, Mahi-Mahi or red snapper)
5 eggs, separated
2 Tbsp. flour
about 2 Tbsp. chopped onion
1/2 stick butter
1 pt. milk
bread crumbs

Preparation

Make a white sauce by melting butter, then mixing in flour and gradually adding milk.
Mix the chopped onion into the sauce and bring to a boil.
Allow sauce to cool and then mix the egg yolks in.
Beat the egg whites until stiff, but not dry and fold them into the sauce very carefully.
Add the fish to this mixture.
Pour the mixture into a round baking dish (10-inch) and sprinkle with bread crumbs.
Let bake for 1 hour at about 400\u00b0.
Serve with melted butter.