New England Seafood Casserole with Bay Scallops

New England Seafood Casserole

Rubbery shrimp or a sauce that turns into a thin soup. That usually happens when the seafood is too wet or overcooked. This version fixes that by drying the proteins and searing them fast before they ever hit the oven.

The result is a dish that tastes like a coastal lodge. It uses a thick cream base and a buttery cracker crust that provides a salty snap.

This New england seafood casserole brings together Atlantic flavors in a way that feels fancy but stays approachable for a home cook.

What Makes the Texture Work

• Moisture Barrier: Thoroughly patting the shrimp and scallops dry prevents the sauce from becoming watery. This allows the cream to adhere to the seafood rather than settling at the bottom of the pan.
• Ritz Contrast: The salty, buttery crunch of the cracker topping offsets the intensity of the creamy sauce.
• Quick Sear: A brief blast of heat builds flavor while ensuring the seafood isn't overdone before the final bake.

Essential Ingredients

• 1 lb raw shrimp, peeled and deveined
• 1 lb bay scallops
• 1 tbsp melted butter
• ½ tsp salt
• ¼ tsp black pepper
• 4 tbsp unsalted butter
• ¼ cup all-purpose flour
• 2 cups half and half
• ½ cup seafood stock
• 1 squeeze lemon juice
• 1 tsp garlic powder
• ½ tsp paprika
• ¼ tsp cayenne pepper
• 1 tbsp fresh parsley, chopped
• 150 g Ritz crackers, crushed
• 4 tbsp unsalted butter, melted
• ¼ cup grated Parmesan cheese

The heavy lifting here comes from the half and half and butter, which create a rich base. I like using seafood stock with a squeeze of lemon juice to add a bright, briny note that cuts through the fat.

Ritz crackers are the go-to for the topping because their high butter content helps them brown into a rich brown crust. Grated Parmesan adds a salty, umami kick that ties the seafood and cream together.

Equipment Needed

Prepare a large skillet for searing and a medium saucepan for the sauce. A 9x13 inch baking dish is ideal here, as it keeps the seafood in a thin layer to ensure everything cooks evenly.

From Prep to Plate

Preparing the seafood

1. Set your oven to 375°F (190°C).
2. Use paper towels to pat 1 lb shrimp and 1 lb scallops completely dry. Season them lightly using ½ tsp salt and ¼ tsp black pepper.
3. Melt 1 tbsp butter in a large frying pan over medium-high. Sear the seafood quickly for 1-2 minutes per side until barely opaque, ensuring they aren't cooked through. Remove and set aside.

Making the cream sauce

4. Using a medium saucepan, melt 4 tbsp butter over medium heat.
5. Stir in ¼ cup all-purpose flour, whisking for 1-2 minutes until the mixture smells nutty but hasn't browned.
6. Gradually whisk in 2 cups half and half and ½ cup seafood stock with a squeeze of lemon juice to keep the sauce smooth.
7. Add 1 tsp garlic powder, ½ tsp paprika, and ¼ tsp cayenne pepper. Simmer for 3-5 minutes until the sauce is thickened and velvety, then stir in 1 tbsp chopped parsley.

Assembly and baking

8. Gently fold the seared seafood into the cream sauce using a large mixing bowl until fully coated.
9. Spread the seafood mixture evenly into a 9x13 inch baking dish.
10. In a small bowl, blend 150 g crushed Ritz crackers, 4 tbsp melted butter, and ¼ cup grated Parmesan cheese. Sprinkle this across the top.
11. Bake for 20-25 minutes until the topping is amber, the sauce is bubbling around the edges, and the seafood hits 145°F (63°C). If the dish is too full, bake in batches to ensure a single layer.

    

12. Rest the casserole for 10 minutes before serving.

Avoiding Common Pitfalls

Fixing a Runny Sauce

A thin consistency often stems from excess moisture on the seafood or an undercooked roux. That one minute of heating is crucial for the flour to bind with the fats. To thicken a runny sauce, let it simmer for an additional two minutes before stirring in the seafood.

Stopping Rubbery Seafood

Avoid overcooking to keep the texture tender. The seafood should only be seared briefly for flavor before finishing in the oven. Cooking them completely on the stovetop will leave them tough and rubbery by the time the crackers are golden.

Preventing Burnt Toppings

Should the crackers brown too quickly before the center is hot, cover the dish with foil. This shields the topping while the interior finishes heating through.

Simple Dietary Swaps

If you want more heat, increase the cayenne pepper to ½ tsp. For those who prefer a milder flavor, a pinch of white pepper replaces the cayenne well.

If you love creamy seafood, my Clam Dip recipe is another great option for parties.

Leftovers and Storage

Place leftover New england seafood casserole in a sealed glass container. It keeps well in the refrigerator for three days.

Do not freeze this dish. The half and half base tends to separate during freezing and thawing, which leaves you with a grainy sauce and watery seafood.

Plating the Dish

Pair this dish with a crisp garden salad or steamed asparagus to balance the richness. A quick spritz of fresh lemon juice just before serving helps brighten the flavors.

To warm up this New england seafood casserole, place it in the oven (350°F/175°C) for 10-12 minutes, until the centre reaches 165°F (74°C) on a thermometer. Skip the microwave, as it often ruins the crust and makes the seafood too rubbery.

High Sodium Content