Baked cod with potatoes, soft inside and crunchy outside !!

Baked cod with potatoes
Ingrediants:
6/7 pieces of cod already soaked
2 medium potatoes into very thin slices
chopped onion
chopped parsley
a few pitted black olives
3/4 chopped tomatoes
coarsely chopped breadcrumbs
salt, pepper and olive oil
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