Green cake with cod

Preparation:

Preparation: The cod needs to be ready, that is, boned, cleaned and broken into small pieces. Boil the spinach, chop it, brown it a little in a pan with half the butter. Meanwhile, also prepare a normal béchamel sauce with the rest of the butter, flour, milk, nutmeg, pepper and salt. Now, add the béchamel sauce to the pan with the spinach, turn it a few times, add the cod, always stirring to bind, and finally pour it all into a greased baking pan. Sprinkle the surface with thinly sliced fontina cheese, add a few knobs of butter, and send to the oven.