Simple Seafood Casserole


Simple Seafood Casserole is the simplest yet our favorite seafood casserole.  The garlic and cream bring this all together in a delicious brothy sauce.

Simple Seafood Casserole

We just love this Simple Seafood Casserole. We got the recipe from a local restaurant that we go to quite often. It is simple and easy yet full of flavor.  

Simple Seafood Casserole

We go to this restaurant quite often. And this is what I would order almost every time we went there. All the food is delicious but this just happened to be one of my favorites.

When I ordered it that night, the waitress told me she thought they would be taking it off the menu! Yikes!!

I asked the waitress to get the recipe for me. I knew it had to be super simple. She did even better by having the chef come out to speak to me. 

So when I begged the chef for the recipe he basically told me ” butter, garlic, salt, cream and whatever else I throw in. You know how we chef’s cook. Oh and some cheese like a Swiss.” I was so very grateful and so glad that I was right.

This was a simple recipe. I could easily whip this out at home and I would be trying this asap! 

My brother is a chef so I know how chef’s work very well. When I told him about this recipe he said to me “that sounds about right”. 

Chef’s don’t work from a recipe so he said to do what he said. He told me you know how to cook just follow what he said and you’ll get it right. 


Simple Seafood Casserole

Easy and so delicious!

Simple Seafood Casserole

Simple Seafood Casserole

So ok the rest was up to me I quess. Well he was pretty much right. I reproduced the same recipe pretty easily. You can do this using some haddock, shrimp, sea scallop, or any other sea food you like.

Most of the time I only use haddock or Cod and Shrimp.  I sometimes use Scallops also.  Oh and it is perfectly low carb too. 

This easy seafood casserole recipe is one of my most requested family favorite recipes.  We could eat this weekly with no problem! 

We normally serve this with jasmine rice or rice pilaf  and broccoli. This casserole is great for a company meal also. You can prepare it earlier in the day and just place it in the oven when your ready for it. 

Simple Seafood Casserole


The Best Shepherd’s Pie

Chicken Broccoli Alfredo Stuffed Shells

Crispy Zucchini Bites with Aioli Dip

If your looking for another delicious seafood recipe you have to try these Maryland crab cakes! They will become a favorite!

Simple Seafood Casserole

The simplest yet our favorite seafood casserole. The garlic and cream bring this fish casserole all together in a delicious brothy sauce.
3.75 from 166 votes
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Course: Dinner
Cuisine: American
Prep Time: 10 minutes
Cook Time: 20 minutes
Total Time: 30 minutes
Servings: 6 servings
Calories: 218kcal
Author: Rob


  • 1 pound haddock cleaned and skinned
  • 1 pound large shrimp cleaned and deviened
  • 3- 4 garlic cloves minced
  • ¼ cup butter, cut into pieces
  • ½ cup heavy cream (use more if neede)
  • ½ cup shredded Swiss cheese
  • Paprika
  • Sea salt and pepper


  • Preheat oven to 375 degrees
  • Spray a glass ceramic 7 x 11 dish with cooking spray
  • Cut haddock into about 1 1/2 in chunks and lay in pan. Add shrimp. Salt and pepper.
  • Add minced garlic to fish and shrimp
  • Pour heavy cream over fish and shrimp and add Swiss cheese.
  • place butter around. utter on top of seafood/fish scattering it
  • Sprinkle with paprika and bake for about 15-20 minutes being careful to not over bake so the shrimp doesn’t overcook.


You can add up to a lb. of sea scallops to this and cook along with the recipe the same amount of time.


Calories: 218kcal | Carbohydrates: 2g | Protein: 25g | Fat: 12g | Saturated Fat: 7g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 3g | Trans Fat: 0.3g | Cholesterol: 165mg | Sodium: 667mg | Potassium: 324mg | Fiber: 0.1g | Sugar: 0.04g | Vitamin A: 491IU | Vitamin C: 1mg | Calcium: 138mg | Iron: 0.4mg

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  1. Patsy Bindel says:

    This looks delish!!

  2. Maria – this looks AMAZING! I cannot wait to try it. Is it okay to share the photo on my blog with a link back? TIA <3 -Mish

    1. I hope you enjoyed it 🙂

  3. Should it be covered when baked?

    1. No it doesn’t have to be.

  4. You don’t need to lightly cook fish and shrimp first?

    1. No it cooks as it bakes. If your fish is thick cut it into smaller pieces.

  5. Can different cheese be used other than swis?

    1. Yes you can. We use Swiss because that’s the recipe that was in the restaurant and we loved it so never had a reason to change it.
      The only other cheese we have used is a blend of Mozzarella and Asiago

  6. I made this tonight and it was really delicious. I used shrimp, bay scallops and crab meat instead of the fish. I only wish the sauce was thicker. I will be making this again.

    1. I’m The sauce is light even though heavy cream is used. You can always try making a roux and adding it towards the end.
      We love this dish as is so I have never tried changing it

  7. 5 stars
    So easy to make and delicious. Thank you. I used Tilapia for the fish because Cod is insanely expensive in Florida. Tilapia is a white fish and fairly firm so it was a great substitution. I will definitely add scallops next time just to add a bit of variety but this recipe is wonderful as written.

    1. So glad you enjoyed! We always add shrimp and switch the rest depending on what is on sale but haddock and cod are pretty abundant
      in our area. This recipe is versatile so any fish or seafood will work. Thank you!

  8. 5 stars
    This was so delicious. My husband and I love it. Will definitely fix it again. I really loved the sauce. It was light and favorable thank you

    1. Thank you so much! So glad you loved it. It’s one of our favorite meals

  9. Gail Cartwright says:

    5 stars
    This recipe was so good. My husband and myself just loved it. I added scallops to the recipe and served wild rice and asparagus spears on the side. Thanks for this great recipe.

    1. Thank you Gail we are so happy you and your husband loved it! This is a very versatile recipe and you can add any fish or seafood you like.
      We use this recipe almost every time we make fish.

  10. 5 stars
    Have you tried making it ahead. Having my 3 BFFs over, planning a lunch and am looking for once to get the jump on my turn to host glam birthday meal.

    One always has too much to do for us to do evenings after 30 years… LOL!

    1. You can prepare it ahead. We have done it many time but I would not cook it ahead. I don’t like reheated fish and to get the fish/seafood to a good warm temp it would
      dry out the fish too much. But you can prepare it the morning of or anytime during the day and just pop it in the oven when you need it.

  11. 5 stars
    This was delicious I will make again Thank You 😁

    1. Thanks Denise! We love this easy recipe. So glad you enjoyed it

  12. Can I use Tilapia instead of haddock?

    1. You can use any white fish. We never use tilapia. Usually we use haddock or scrod. But tilapia would be fine

  13. I can’t wait to try this for Valentines Day Dinneer. But how many does this feed?

    1. Hi this feeds 2-3 depending if you serve over rice.

  14. I made this with Havarti cheese that I had on hand and it was absolutely delicious. I will try it with Swiss cheese next time, but I don’t see how it could be better!

    1. Thank yo so much so happy you liked it. We have used different cheeses and it is always good. You can’t go wrong with Havarti!