As I wandered through a quaint coastal town in New England, I was captivated by the aroma of the sea lingering in the air, beckoning me to the local eateries. This inspired me to create my very own New England Seafood Casserole, a dish that brings those cherished seaside flavors right to my kitchen. Combining succulent shrimp, tender scallops, and flaky white fish, all wrapped in a creamy sauce and topped with golden, crunchy breadcrumbs, this recipe is both a comforting hug and a quick weeknight dinner solution. In just 35 minutes, you can indulge in a hearty, delicious meal that's perfect for sharing with loved ones or savoring solo. Curious to learn how to recreate this seafood delight? Let’s dive into the recipe together!

Why is this casserole a must-try?
Hearty and Satisfying: This New England Seafood Casserole offers a delightful blend of flavors and textures that will warm your heart and soul.
Time-Saving Deliciousness: In just 35 minutes, you can transform fresh seafood into an indulgent meal, perfect for busy weeknights.
Elevated Comfort Food: Imagine creamy sauce enveloping tender shrimp and scallops topped with crispy breadcrumbs—the ultimate cozy dinner experience!
Customizable Goodness: Feel free to swap seafood or experiment with different cheeses for a personalized twist. For a complete meal, consider pairing it with a light salad or a crusty bread, similar to how I complement my Seafood Pasta Savory dishes!
Crowd-Pleaser: Whether you’re hosting a family gathering or a cozy night in, this casserole will impress everyone at the table!
New England Seafood Casserole Ingredients
For the Seafood
• Shrimp – Provides a sweet and tender protein base; feel free to substitute with any firm white fish if unavailable.
• Scallops – Adds a rich, buttery flavor; replace with additional shrimp if allergic.
• White Fish Fillets (haddock/cod) – Contributes a delicate texture; other firm white fish can work well too.
For the Sauce
• Heavy Cream – Creates a rich and creamy sauce; consider using half-and-half or evaporated milk for a lighter option.
• Milk – Helps balance creaminess; non-dairy milk can serve as an alternative.
• Butter – For sautéing and creating the base sauce; can be replaced with olive oil.
• All-Purpose Flour – Thickens the sauce; gluten-free flour can be a good substitute.
• Garlic Powder – Adds depth of flavor; fresh minced garlic can enhance the dish further.
• Onion Powder – Provides aromatic sweetness; replace with fresh onion if you prefer.
• Paprika – Adds color and mild flavor; using smoked paprika will create a nice smokiness.
For the Topping
• Breadcrumbs – Adds a crunchy topping; panko works great for extra crispness or opt for gluten-free breadcrumbs if needed.
• Grated Cheddar Cheese – Melts beautifully and enhances flavor; substitute with mozzarella or a dairy-free cheese if desired.
For Seasoning
• Dried Parsley – Offers a touch of color and flavor; fresh parsley can be used for a fresher taste.
• Salt and Pepper – Essential for seasoning; adjust these to your taste preferences.
• Lemon Juice – Brightens flavors and balances the richness; fresh lemon juice is always recommended.
Step‑by‑Step Instructions for New England Seafood Casserole
Step 1: Preheat the Oven
Begin by preheating your oven to 350°F (175°C). This ensures it reaches the perfect temperature for baking your delicious New England Seafood Casserole while you prepare the ingredients. A well-heated oven will give you that golden, bubbly finish we all love.
Step 2: Prepare the Seafood
Rinse your shrimp, scallops, and white fish under cold water, then pat them dry with paper towels. This step is essential to avoid excess moisture in your casserole. If using larger fish fillets, cut them into bite-sized pieces, making it easy to enjoy every mouthful of seafood in the casserole.
Step 3: Make the Base Sauce
In a medium saucepan, melt 3 tablespoons of butter over medium heat until foamy. Whisk in 3 tablespoons of all-purpose flour and cook for about 1-2 minutes until it resembles a paste and is slightly golden. This creates a roux that will thicken your sauce beautifully for the New England Seafood Casserole.
Step 4: Incorporate Cream and Milk
Gradually pour in 1 cup of heavy cream and 1 cup of milk, whisking constantly for about 3-5 minutes until the mixture thickens and begins to bubble gently. Look for a creamy consistency that coats the back of a spoon—this is perfect for enveloping the seafood flavors in your casserole.
Step 5: Season the Sauce
Stir in 1 teaspoon of garlic powder, 1 teaspoon of onion powder, 1 tablespoon of dried parsley, 1 teaspoon of paprika, and a pinch of salt and pepper to the thickened sauce. Finally, add 1 tablespoon of fresh lemon juice for brightness. Mix well to ensure all the flavors harmonize throughout the sauce.
Step 6: Combine Seafood and Sauce
In a large mixing bowl, gently fold the prepared seafood into the creamy sauce until fully coated. Take care not to break up the scallops or fish too much; you want to retain some texture. This rich filling is the heart of your New England Seafood Casserole, promising a delightful burst of flavors.
Step 7: Transfer to Casserole Dish
Lightly grease a 9x13-inch casserole dish with butter or cooking spray. Pour the seafood mixture into the prepared dish, spreading it evenly with a spatula. This ensures that each scoop will contain a generous helping of seafood and creamy goodness, ready to be transformed in the oven.
Step 8: Add the Toppings
Sprinkle 1 cup of grated cheddar cheese evenly across the top of the casserole, followed by a layer of about 1 cup of breadcrumbs. For added crunch, consider using panko breadcrumbs, which will create a delightful contrast against the rich, creamy filling beneath.
Step 9: Bake the Casserole
Place the assembled casserole in your preheated oven and bake for 30-35 minutes. Keep an eye on it as it bakes—you're looking for a golden top with bubbling edges that indicate the seafood is cooked through and the cheese is melting beautifully.
Step 10: Cool and Serve
Once baked, remove the casserole from the oven and allow it to cool for about 5-10 minutes before serving. This resting time helps the casserole set, making it easier to serve while preserving that comforting creaminess every bite of your New England Seafood Casserole promises!

What to Serve with New England Seafood Casserole
Creating a complete meal around your casserole enhances the experience, inviting warmth and comfort to the dinner table.
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Crusty Bread: Perfect for scooping up the creamy filling, a warm loaf adds a satisfying crunch and is a cozy companion to this dish.
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Light Green Salad: A refreshing side featuring mixed greens, cucumbers, and a lemon vinaigrette balances the richness of the casserole with bright, zesty flavors.
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Roasted Asparagus: Tender yet crisp, the earthy tones of roasted asparagus bring out the delicate seafood notes and add a beautiful pop of color to your plate.
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Baked Sweet Potatoes: Their natural sweetness beautifully contrasts the savory seafood, while their fluffy texture complements the creamy casserole wonderfully.
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Garlic Mashed Potatoes: Creamy and buttery, these mashed potatoes provide a comforting base for every forkful of seafood casserole.
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Wine Pairing: A chilled glass of Sauvignon Blanc or a buttery Chardonnay enhances the flavors and adds a festive touch to your meal.
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Dessert Idea: Finish off the evening with a light lemon sorbet to cleanse your palate, echoing the seafood's lemony notes and leaving you refreshed.
Each of these suggestions contributes contrasting textures and flavors, weaving a delightful tapestry around your New England Seafood Casserole.
Make Ahead Options
These New England Seafood Casserole are fantastic for meal prep, helping you save time on busy weeknights! You can prepare the entire casserole up to 24 hours in advance by assembling it and storing it in the refrigerator, covered tightly to maintain fresh flavors. Additionally, if you want to save even more time, cook the seafood filling and store it separately for up to 3 days; just reheat it gently before combining it with the prepped pasta. When you're ready to serve, simply top with breadcrumbs and cheese, then bake straight from the refrigerator for a delicious homemade meal, just as comforting as if you had made it fresh that day!
How to Store and Freeze New England Seafood Casserole
Fridge: Store leftovers in an airtight container in the fridge for up to 3 days. Ensure the casserole is completely cooled before sealing to maintain freshness.
Freezer: If well-wrapped in plastic wrap and aluminum foil, the casserole can be frozen for up to 3 months. Thaw overnight in the fridge before reheating.
Reheating: To reheat, place the casserole in an oven preheated to 350°F (175°C) for about 20-25 minutes, or until heated through. Check that the seafood is piping hot before serving.
Make-Ahead Tips: Prepare the New England Seafood Casserole a day in advance and store it in the fridge. Bake just before serving for maximum flavor and warmth!
Expert Tips for New England Seafood Casserole
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Pat Dry Seafood: Ensure to pat your seafood dry before adding it to the casserole to avoid a watery texture in your dish.
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Thickening Sauce: If you prefer a thicker sauce, allow it to simmer longer after adding the cream and milk. This will enhance the richness of your New England Seafood Casserole.
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Cool Before Serving: Let the casserole rest for a few minutes after baking to help it set, resulting in a better texture and easier serving.
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Fresh Ingredients: Using fresh seafood and herbs will elevate the flavors significantly, making your casserole even more delightful and aromatic.
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Experiment with Cheese: Don't hesitate to swap out the cheddar for other cheeses like Gruyère or mozzarella to customize the flavor profile of your casserole.
New England Seafood Casserole Variations
Feel free to get creative with this recipe and personalize it to suit your taste!
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Gourmet Twist: Substitute shrimp for crab or lobster to elevate the dish to a new level of indulgence. Imagine the buttery richness of the seafood mingling with that creamy sauce—it’s pure bliss!
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Cheese Experimentation: Try different cheeses like Gruyère or fontina for a unique twist in flavor. The nutty notes of Gruyère will add a delightful complexity, making your casserole even more irresistible.
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Veggie Boost: Add vegetables such as fresh spinach or peas to enhance the nutrition and add color to your dish. Not only will they provide a pop of freshness, but they will also blend beautifully into the creamy backdrop.
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Spice It Up: For those who love a kick, add a dash of red pepper flakes or cayenne pepper to the sauce. This little extra heat will awaken the flavors and make each bite an exciting experience.
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Whole Grain Option: Swap regular breadcrumbs for whole grain or panko for a healthier option with a delightful crunch. You'll enjoy that satisfying crunch and feel good about your choice!
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Dairy-Free Delight: Use coconut milk or a non-dairy cream to make a deliciously creamy dairy-free version. The subtle coconut flavor would complement the seafood beautifully, offering a tropical twist to your casserole.
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Zestful Additions: Incorporate finely chopped scallions or leeks for an aromatic upgrade that adds depth and character to the dish. Their mild onion flavor will harmonize beautifully with the seafood.
For more delicious seafood inspiration, don’t forget to check out my Seafood Pasta Savory dish, which is perfect for seafood lovers, or dive into a warming Spicy Miso Casserole that packs a flavorful punch!

New England Seafood Casserole Recipe FAQs
What seafood should I use for the casserole?
Absolutely! For this New England Seafood Casserole, I recommend using fresh shrimp, scallops, and flaky white fish like haddock or cod. If any of these are unavailable, you can substitute with other firm white fish or even canned seafood. Just ensure your seafood is fresh to get that savory coastal flavor in every bite.
How should I store leftover seafood casserole?
You can store leftover casserole in an airtight container in the refrigerator for up to 3 days. It's important to let the casserole cool completely before sealing it to maintain its deliciousness. When you're ready to enjoy it again, just pop it in the oven to reheat.
Can I freeze New England Seafood Casserole?
Yes! To freeze, wrap the casserole tightly in plastic wrap and then in aluminum foil. It will last for up to 3 months in the freezer. When you're ready to eat, thaw it overnight in the fridge and then reheat in a preheated oven at 350°F (175°C) for about 20-25 minutes, until heated through.
What are some common issues when making the casserole?
One common issue is having a watery casserole. Make sure to pat your seafood dry before mixing it into the sauce. Additionally, if you find your sauce too thin, let it simmer longer after adding the cream and milk for a thicker consistency. Another tip is to let the casserole rest for a few minutes after baking, helping it set and making it easier to serve.
Can I make this casserole ahead of time?
Certainly! You can prepare your New England Seafood Casserole a day in advance. Just assemble it, cover, and store it in the refrigerator until you're ready to bake. When you're ready to serve, simply bake it straight from the fridge, adding an extra 5-10 minutes to the baking time if it’s cold.
Is this casserole pet-friendly?
Avoid sharing this dish with pets, especially with seafood and dairy in it. Dogs can have some seafood, but onions, garlic, and rich sauces can be harmful. Always consult your veterinarian before introducing new foods to your pets.

Creamy New England Seafood Casserole That Will Wow Your Taste Buds
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C).
- Rinse your shrimp, scallops, and white fish under cold water and pat them dry with paper towels.
- In a medium saucepan, melt 3 tablespoons of butter over medium heat until foamy. Whisk in 3 tablespoons of all-purpose flour and cook for about 1-2 minutes.
- Gradually pour in 1 cup of heavy cream and 1 cup of milk, whisking constantly for 3-5 minutes until the mixture thickens.
- Stir in 1 teaspoon of garlic powder, 1 teaspoon of onion powder, 1 tablespoon of dried parsley, 1 teaspoon of paprika, and a pinch of salt and pepper to the sauce.
- Gently fold the prepared seafood into the creamy sauce until fully coated.
- Lightly grease a 9x13-inch casserole dish and pour the seafood mixture into the prepared dish.
- Sprinkle 1 cup of grated cheddar cheese evenly across the top, followed by a layer of 1 cup of breadcrumbs.
- Place the casserole in your preheated oven and bake for 30-35 minutes.
- Remove the casserole from the oven and allow it to cool for about 5-10 minutes before serving.





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