Cod in mustard sauce from the oven

Cod in mustard sauce from the oven is an easy, quick and seriously delicious dish that’s perfect for Fish Day Friday or any time you’re in the mood for a no-fuss fish meal.

Fish is healthy and very tasty and is a great alternative to meat dishes.

In my simple recipe, with understandable step-by-step instructions, I’ll show you how to conjure up this great dish on the table without any stress.

I am sure that once you have made cod in mustard sauce from the oven, you will return again and again because the whole family loves it!

Cod in mustard sauce from the oven

What is cod?
Cod is a common food fish that is also called cod, the term cod being used mainly for young cod.

What is a mustard sauce?
A mustard sauce is a light sauce (béchamel sauce) that is seasoned with mustard and dill. It goes very well with all kinds of fish

Dish: main course
In total 40 mins
Servings: 4


  • 4 to 6 cod fillets Approx. 800g
  • For the mustard sauce:
  • 50 grams of butter
  • 50 grams of flour
  • 150ml milk _
  • 150 ml whipping cream
  • ½ tsp salt
  • 2 tbsp mustard
  • 2 tsp dill
  • ½ tsp white pepper
  • 1 pinch nutmeg
  • ½ tsp sugar
  • 1 tsp lemon juice

And that’s how it’s done

  1. Rinse the cod fillets under cold water and pat dry with paper towels.
  2. Season with salt, black pepper and lemon juice.
  3. Grease the casserole dish with butter and place the cod fillets side by side.

For the mustard sauce:

  1. Melt the butter in a saucepan, then add the flour a spoonful at a time, stirring constantly, until the mixture is even.
  2. Continue stirring while adding the cream and milk.
  3. Now add the mustard and dill to the sauce.
  4. Season to taste with salt, pepper, nutmeg, lemon juice and sugar.
  5. Keep stirring and let the sauce simmer on low heat for at least 10 minutes.
  6. Stir frequently so the sauce doesn’t burn.
  7. Then pour the mustard sauce into the casserole dish with the cod fillets.
  8. Cook in the preheated oven on the middle shelf for about 20 minutes. (core temperature 58 degrees)

Arranging and serving:

  1. Take the casserole dish out of the oven and let it cool down a bit.
  2. Then place the cod fillets on plates with the mustard sauce and serve immediately with a side dish of your choice.
  3. Rice, mashed potatoes or boiled potatoes go well with this.
  4. Enjoy your meal!

Read more Blitz Spaghetti Bolognese

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