Simple Seafood Casserole

 

Simple Seafood Casserole is the simplest yet our favorite seafood casserole. Haddock, shrimp, garlic, butter, cream, and Swiss cheese are all combined and baked to melted perfection.

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

❤️ Why You’ll Love This Recipe

  • It is a super simple seafood recipe that is creamy, cheesy, and studded with shrimp and fish in each bite.
  • Easy to make and get tossed in the oven. This is a great dinner or dish to serve up for guests.
  • This seafood dish offers a gorgeous presentation value.
  • Versatile in terms of types of fish to use, seasonings, spices, etc.

🛒Ingredients

You only need simple ingredients to help you make this seafood dish. So, gather these ingredients on your next trip to the grocery store so you can enjoy this shrimp recipe.

  • haddock
  • shrimp
  • garlic
  • butter
  • heavy cream
  • Swiss cheese
  • paprika
  • salt and pepper
collage of seafood casserole in pan and then with rice and parsley on top

🔪 How to Make This Seafood Casserole

Start by preparing your pan, and then add your diced haddock into the pan.

Next, sprinkle in the cheese, spreading it all over the pan.

Season with the spices, and then add the garlic over the top. Pour the heavy cream all over the seafood.

Follow up by sprinkling on the cheese, and place butter all over.

Bake as directed, and remove and serve once the seafood is done and the cheese is melted.

Seafood Casserole in a pan all baked and then image with it dished up with bread and rice under the fish.

🥄 Equipment

  • 7×11 or 9×13 baking dish
  • Measuring Cups
  • Cutting board
  • Sharp Knife
Simple Seafood Casserole in a pan and then a plate with rice and some of the shrimp and fish on top

🥫 Storage

Refrigerate any of the seafood you do not eat. Place in an airtight container and refrigerate for 2-3 days. Then, you can warm it up in the microwave or a pan on the stovetop.

Due to the heavy cream, this seafood casserole recipe does not freeze and thaw very well. So, I do not recommend freezing.

diced haddock and shrimp in a pan with black pepper sprinkled on top
shrimp, cheese, fish all in a casserole pan uncooked

Serve With

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

Serve with a side salad, or use this as an appetizer for a party and serve with sliced bread, crackers, etc.

Simple Seafood Casserole with rice and parsley garnished on a plate

💭 Tips and Variations

  • Dice the fish evenly so you get cubes of an evenly sized size. You want them to be the same size so all the seafood bakes evenly. Otherwise, some pieces could be overdone or underdone.
  • Watch the seafood as you do not want to overbake it, or it can become chewy and rubbery.
  • You can use any white fish for this recipe. Cod or Tilapia is a great one to swap in.
  • Scallops are a great addition to the shrimp and fish.
  • You can add pieces of lump crab to the mixture to add more flavor.
  • Feel free to change up from the Swiss cheese if you would like. Any white shredded cheese would be a great light flavor pairing.
  • Use a Cajun seasoning blend or opt for black pepper, lemon, or any other flavor to add flavor to your dish.
collage of images of a seafood casserole in pan, served on rice on a plate and more.

⁉️ FAQ

Do you have questions about this recipe? Here are the answers to the most commonly asked questions.

Can I use frozen shrimp?

Thaw the shrimp before you bake it to ensure an evenly cooked shrimp. Cooking straight from the freezer will water down the casserole, resulting in an uneven cook.

What can I use instead of Swiss cheese?

Mozzarella, cheddar, or even Gruyere are all fantastic cheese varieties that can replace Swiss cheese.

What if I don’t have heavy cream?

Half and half can be used to swap or replace the heavy cream. You can also add 4 ounces of cream cheese cut into cubes with some whole milk.

OTHER RECIPES YOU WILL LOVE:

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
Print Pin Rate
Course: Dinner
Cuisine: American
Prep Time: 10 minutes
Cook Time: 20 minutes
Total Time: 30 minutes
Servings: 6 servings
Calories: 218kcal
Author: Rob

Ingredients

  • 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

Instructions

  • 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.

Notes

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

Nutrition

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
overlook of seafood casserole in a pan with paprika on top
3.75 from 166 votes (161 ratings without comment)

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31 Comments

  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!