If you’re searching for the ultimate comfort food from the Northeast, look no further than the legendary New England Seafood Casserole. This dish is a bubbling blend of plump shrimp, tender scallops, and flaky white fish, all gently baked in a creamy, savory sauce and topped with a golden, buttery cracker crust. It’s the flavor of seaside vacations, cozy Sunday gatherings, and joyful dinner tables all rolled into one irresistible entree. Each bite delivers briny sweetness, silky richness, and a hint of lemon—perfect for anyone who craves classic coastal flavor at home.
Ingredients You’ll Need
The ingredients for this New England Seafood Casserole are pleasantly straightforward, yet each element brings something special—whether it’s creaminess, a hint of crunch, or a splash of freshness. Every component pulls its weight to create a casserole that feels truly celebratory yet easy enough for a weeknight.
- Scallops (1/2 pound): Sweet and tender, scallops add a delicate sweetness and meaty texture that’s essential for this dish.
- Shrimp, peeled and deveined (1/2 pound): Plump shrimp bring a briny brightness and help make the casserole hearty and satisfying.
- Firm white fish (such as cod or haddock), cut into chunks (1/2 pound): The flaky fish soaks up the creamy sauce and gives the casserole structure.
- Butter, divided (4 tablespoons): Butter enriches both the base of the sauce and creates a crisp, flavorful topping.
- Small onion, finely chopped (1): Onion gives a gentle sweetness and depth to the creamy filling.
- Celery stalk, finely chopped (1): Celery balances the dish with a whisper of freshness and crunch.
- Garlic, minced (2 cloves): Just enough garlic to bring a savory backbone without overpowering the seafood.
- All-purpose flour (1/4 cup): This thickens the sauce for a luscious, spoonable consistency.
- Seafood stock or clam juice (1 cup): It deepens the seafood flavor of the casserole, making every bite taste ocean-fresh.
- Heavy cream (1/2 cup): For luxurious richness and a silky-smooth sauce.
- Whole milk (1/2 cup): Lightens the sauce so it doesn’t become overly heavy.
- Old Bay seasoning (1 teaspoon): A classic blend that brings gentle warmth and the signature flavor of New England seafood dishes.
- Lemon juice, fresh (1 tablespoon): A squeeze livens up the sauce and brightens the seafood.
- Salt (1/4 teaspoon): Enhances all the flavors without making things too salty.
- Black pepper (1/4 teaspoon): Adds a subtle spark and balances the richness.
- Frozen peas, optional (1/2 cup): Bring a sweet pop of color and a burst of freshness to every scoop.
- Crushed buttery crackers (like Ritz, 1/2 cup): The golden, crispy top layer that everyone fights over.
- Fresh parsley, chopped (2 tablespoons): For a sprinkling of herby color and clean flavor at the finish.
How to Make New England Seafood Casserole
Step 1: Sauté the Aromatics
Start by preheating your oven to 375°F (190°C) and giving your baking dish a quick grease. In a large skillet, melt half the butter over medium heat. Add the finely chopped onion, celery, and minced garlic. Sauté for about five minutes until the vegetables are soft and fragrant—the foundation of flavor for your creamy casserole.
Step 2: Make the Creamy Sauce
Once the vegetables have softened, sprinkle in the flour and stir constantly for a minute. This step is important because it cooks out any raw flour taste. Gradually whisk in the seafood stock, followed by the cream and milk. Keep whisking gently as the mixture thickens up into a luscious sauce—usually in about three to five minutes.
Step 3: Flavor and Combine
Now, season the sauce with Old Bay, lemon juice, salt, and pepper. Stir well. Add your seafood—the scallops, shrimp, and fish chunks—plus those pretty peas if you’re using them. Gently fold everything together so the seafood is coated and ready for the oven. Be careful not to break up the fish too much!
Step 4: Assemble the Casserole
Transfer your creamy seafood mixture to the prepared baking dish, spreading it out evenly. In a small bowl, melt the rest of the butter and stir in the crushed crackers until every bit is glistening and buttery. Sprinkle this cracker topping evenly over the casserole for a golden crunch in every bite.
Step 5: Bake Until Bubbling
Pop the casserole in the oven and bake for 25 to 30 minutes, until the top is golden brown and the seafood is fully cooked (it should be opaque and just firm). The bubbling edges and toasty aroma will let you know it’s done. Finish with a good shower of fresh parsley—the signature of any true New England Seafood Casserole.
How to Serve New England Seafood Casserole
Garnishes
The traditional finish is a scattering of fresh parsley, which looks gorgeous and provides a burst of freshness. If you’re feeling extra festive, a wedge or two of lemon on the side lets guests add a spritz of brightness right at the table. For a subtle kick, a sprinkle of paprika or cracked black pepper over the top is always welcome.
Side Dishes
This hearty casserole is right at home next to a big green salad or roasted asparagus. Spoon it over fluffy rice or buttery mashed potatoes to soak up every drop of sauce, or serve with slices of crusty bread for the ultimate comfort meal. If you’re leaning into the New England theme, a side of coleslaw makes a refreshing contrast.
Creative Ways to Present
For fun dinner parties, try baking your New England Seafood Casserole in individual ramekins so everyone gets their own bubbling, golden-topped dish. Or, scoop the casserole into warm sourdough bread bowls for a dramatic, crowd-pleasing presentation. Serve it family-style in a big, rustic casserole dish and let everyone dig in together—it’s a guaranteed conversation starter!
Make Ahead and Storage
Storing Leftovers
Let any leftovers cool to room temperature, then cover tightly with foil or transfer to an airtight container. The New England Seafood Casserole will keep in the refrigerator for up to two days, and the flavors deepen beautifully overnight. Simply reheat when you’re ready for another taste of the coast!
Freezing
You can freeze New England Seafood Casserole before baking: assemble everything, cover securely with foil and plastic wrap, and freeze for up to one month. When ready to enjoy, thaw in the fridge overnight and bake as directed—just add a few minutes to make sure it’s heated through. Avoid freezing leftovers after they’ve already been baked, as seafood can change texture.
Reheating
To reheat, cover the casserole with foil and warm in a 350°F oven until hot and bubbly—this helps keep the topping crisp and the seafood tender. You can also microwave smaller portions, uncovered, on medium power, but watch carefully so the seafood doesn’t overcook and become rubbery.
FAQs
Can I use frozen seafood instead of fresh?
Absolutely! Just make sure to thaw your seafood completely and pat it dry before adding it to the casserole. This prevents excess liquid, so your New England Seafood Casserole turns out creamy, not watery.
Is it possible to substitute the seafood?
Yes! Feel free to swap in lobster, crab, or even all shrimp if that’s what you prefer or have on hand. The magic is in the creamy sauce and the cracker topping, so use your favorite mix of seafood to make this casserole truly your own.
What if I don’t have Old Bay seasoning?
Old Bay is classic for New England Seafood Casserole, but you can improvise with a mix of paprika, celery salt, a pinch of mustard powder, and a bit of cayenne. Even lemon pepper and a touch of dill work in a pinch!
How can I make this gluten-free?
To enjoy a gluten-free version, swap the all-purpose flour for your favorite gluten-free blend and use gluten-free crackers for the topping. The casserole will still be creamy and delicious.
Can I prepare the casserole in advance?
Definitely! Assemble the New England Seafood Casserole up to a full day ahead, refrigerate it unbaked, and simply pop it in the oven when you’re ready. It’s a hostess’s dream for stress-free entertaining.
Final Thoughts
If you’re craving a dish that blends nostalgia, comfort, and seaside happiness, you can’t go wrong with New England Seafood Casserole. It’s the kind of crowd-pleasing recipe you’ll turn to again and again, whether you’re feeding a hungry family or impressing friends with a taste of the Atlantic. Gather your ingredients and dive in—your kitchen is about to smell amazing!
Print
New England Seafood Casserole Recipe
- Prep Time: 20 minutes
- Cook Time: 30 minutes
- Total Time: 50 minutes
- Yield: 6 servings
- Category: Main Course
- Method: Baking
- Cuisine: American (New England)
- Diet: Non-Vegetarian
Description
Indulge in the rich flavors of the New England Seafood Casserole, a creamy and comforting dish packed with scallops, shrimp, and white fish in a savory sauce, topped with buttery crumbs. Perfect for a cozy family dinner or entertaining guests.
Ingredients
Seafood Mix:
- 1/2 pound scallops
- 1/2 pound shrimp (peeled and deveined)
- 1/2 pound firm white fish (such as cod or haddock), cut into chunks
Sauce:
- 4 tablespoons butter (divided)
- 1 small onion, finely chopped
- 1 celery stalk, finely chopped
- 2 cloves garlic, minced
- 1/4 cup all-purpose flour
- 1 cup seafood stock or clam juice
- 1/2 cup heavy cream
- 1/2 cup whole milk
- 1 teaspoon Old Bay seasoning
- 1 tablespoon fresh lemon juice
- 1/4 teaspoon salt
- 1/4 teaspoon black pepper
- 1/2 cup frozen peas (optional)
- 1/2 cup crushed buttery crackers (like Ritz)
- 2 tablespoons chopped fresh parsley
Instructions
- Preheat the oven: Preheat the oven to 375°F (190°C) and lightly grease a 9×13-inch baking dish.
- Sauté vegetables: In a large skillet, melt 2 tablespoons butter over medium heat. Sauté the onion, celery, and garlic until soft, about 5 minutes.
- Make the sauce: Stir in the flour and cook for 1 minute. Gradually whisk in the seafood stock, heavy cream, and milk until smooth and thickened, about 3–5 minutes. Stir in Old Bay seasoning, lemon juice, salt, and pepper.
- Combine with seafood: Add the seafood and peas (if using), then gently stir to coat everything in the sauce. Transfer the mixture to the prepared baking dish.
- Top with crumbs: Melt the remaining 2 tablespoons of butter and combine with the crushed crackers. Sprinkle the buttery crumbs evenly over the top.
- Bake: Bake for 25–30 minutes or until the seafood is fully cooked and the top is golden.
- Serve: Garnish with fresh parsley and serve hot.
Notes
- This casserole can be made ahead and refrigerated for up to 24 hours before baking.
- You can substitute lobster or crab for part of the seafood mix.
- Serve with rice, mashed potatoes, or crusty bread for a complete New England-style meal.
Nutrition
- Serving Size: 1 portion
- Calories: 410
- Sugar: 3g
- Sodium: 620mg
- Fat: 24g
- Saturated Fat: 12g
- Unsaturated Fat: 9g
- Trans Fat: 0g
- Carbohydrates: 17g
- Fiber: 1g
- Protein: 31g
- Cholesterol: 155mg
