Icelandic Baked Fish

1 tablespoon butter
6 fish fillets or 6 cod fish fillets I used both cod and Alaskan Pollock (we preferred the Pollock but both were good)
1 lemon
salt , pepper to taste
200 g emmenthaler cheese or 200 g tilsiter cheese , grated (I used emmenthaler)
1 tablespoon mustard (I used dijon mustard)
1 cup cream
½ cup breadcrumbs

Preheat oven at 180° celsius. Butter a baking-dish. Put the fillets into the baking-dish. Season the fillets with salt, pepper and freshly squeezed lemon juice. Cover the fish with ground cheese. Mix mustard with cream and pour it over fish fillets. Cover with breadcrumbs. Bake the fillets for 35 minutes. Serve with rice or noodles.