Cod with Anchovy and Mustard Sauce

This is a very simple way to roast fish that doesn't take a long time to throw together and cooks quickly. I make a simple sauce, spoon it over a filet of fish and add potatoes to make it more substantial. You can use any quick cooking vegetable like green beans or asparagus if you prefer. Use any firm white fish, if the piece is on the thinner side, re…