Haddock Au Gratin

Haddock Au Gratin


"Delicious and cheesy but definitely NOT low fat! The onion and mustard make this fish in cream sauce seductively flavorful."


45 m servings 301 cals
Serving size has been adjusted!

Original recipe yields 8 servings



  • Calories:
  • 301 kcal
  • 15%
  • Fat:
  • 19.5 g
  • 30%
  • Carbs:
  • 4.4g
  • 1%
  • Protein:
  • 26.4 g
  • 53%
  • Cholesterol:
  • 124 mg
  • 41%
  • Sodium:
  • 634 mg
  • 25%

Based on a 2,000 calorie diet

On Sale

What's on sale near you.


  • Prep

  • Cook

  • Ready In

  1. Preheat oven to 350 degrees F (175 degrees C). Lightly butter a medium or large baking dish.
  2. Rinse and dry fillets. Season with 1 teaspoon salt and 1/8 teaspoon pepper.
  3. In a skillet or frying pan, melt butter over medium heat. Saute onion in butter until golden. Stir in flour until completely incorporated. Stir in mustard, 1/2 teaspoon salt, light and heavy creams. Cook until thickened, stirring constantly. Remove from heat and stir in cheeses. Pour sauce over fish and sprinkle with paprika.
  4. Bake in preheated oven for 30 minutes, until brown and bubbly.
  • profile image

Your rating



  1. 115 Ratings


This was very good. I used 1/2 skim milk and 1/2 2% instead of all the cream. I also added a dash of cayenne pepper to cream sauce. Was just rich enough, definitely didn't miss all the cream ...

First I have to say that I am American and my husband is 100% Scottish. The only way he has ever had fish is as 'fish and chips'...ie: deep fried. I gave him two options from this site and he sa...

This was quite good. The husband loved it. I would recommend if you cut the recipe in half do NOT cut the sauce in half as well. You really need the full amount.

Excellent! My husband says "this is a keeper!" I didn't have haddock, so I used cod. Other than that, I followed the recipe exactly. Thank you, Cathy.

I added a little more single cream and a chopped hard-boiled egg and it was delicious ... definitely one I'll be making again. (Measuring in cups is still a new concept for me, but I'm getting t...

Absolutely the best haddock I have had in my life. I will definately be making this again in the future. My entire family loved it!

This works well with tilapia if haddock is unavailable. It was a hit until my husband, a cardiologist, heard the ingredients! I probably won't be making it too often!

My family loved this. I am not a cook at all. This was easy to make and easy to clean. My wife is jealous. We are on the low carb diet so this was perfect. Thanks

Excellent recipe!