Name: Creamy Seafood Casserole That's Perfect for Lent Nights
Prep time: 10 min
Cook time: 20 min
Total time: 35 min
Ingredients: 1 pound Haddock (Provides a firm texture; substitute with halibut or cod if desired.); 1 pound Scallops (Adds sweetness; can be omitted or replaced with shrimp.); 1 pound Large Shrimp (Contributes a rich flavor; smaller varieties can be used.); 1 cup Heavy Cream (Creates a rich and creamy sauce; adjust to 3/4 cup for extra creaminess.); 1 cup Shredded Swiss Cheese (Provides creaminess and mild flavor.); 1/4 cup Grated Parmesan (Optional but recommended for flavor.); 3 cloves Garlic (Enhances flavor.); 1 teaspoon Paprika (Adds warmth and depth.); to taste Sea Salt (Essential for seasoning.); to taste Pepper (Essential for seasoning.)

With a tantalizing warmth that wraps around you like a cozy blanket, my Easy Seafood Casserole is a dish that feels like a comforting hug after a long day. This creamy delight, brimming with succulent shrimp and tender scallops, is not only a crowd-pleaser but also a breeze to prepare, making it perfect for busy weeknights or special occasions—especially during Lent. One of the incredible perks of this recipe is its adaptability, allowing you to easily swap out ingredients based on your preference or pantry supplies without sacrificing taste. Trust me, this casserole is a satisfying way to indulge in homemade goodness that leaves fast food in the dust. Are you curious about how to make this comforting classic? Let’s dive in!

What makes this casserole so special?

Unmatched Comfort: This creamy seafood casserole wraps you in warmth, ideal for those chilly nights.
Endless Flexibility: Easily swap scallops for your favorite seafood, ensuring everyone loves it.
Quick & Simple: With just a few steps, you can whip up a dish that tastes like it took hours!
Impressive Flavor: The combination of shrimp, seafood, and rich cheeses creates a symphony of taste that sings.
Crowd-Pleaser: Perfect for family gatherings or casual dinners, this dish will leave everyone asking for seconds.

For more delicious seafood inspiration, don’t miss the flavors of my Stuffed Seafood Bread or the exciting Cajun Seafood Boil.

Seafood Casserole Ingredients

For the Seafood

Haddock – Provides a firm texture with a mild flavor; substitute with halibut or cod if desired.
Scallops – Adds sweetness and a tender bite; can be omitted or replaced with shrimp or other seafood.
Large Shrimp – Contributes a rich flavor and meaty texture; smaller shrimp varieties can be used for a more budget-friendly option.

For the Sauce

Heavy Cream – Creates a rich and creamy sauce; adjust the amount up to 3/4 cup for an extra creamy texture.
Shredded Swiss Cheese – Provides creaminess and a mild flavor, making the dish even more comforting.
Grated Parmesan – Adds a salty, nutty flavor; optional but recommended for a delicious topping.

For Seasoning

Garlic – Enhances the overall flavor with a savory aroma.
Paprika – Adds a touch of warmth and depth to the dish.
Sea Salt and Pepper – Essential for basic seasoning to elevate the taste of the seafood casserole.

This Seafood Casserole is not just about delicious flavors; it’s also about the joy of bringing family together for a heartfelt meal!

Step‑by‑Step Instructions for Seafood Casserole

Step 1: Preheat the Oven
Begin by preheating your oven to 375°F (190°C). This ensures a perfectly cooked Seafood Casserole right from the start. As the oven warms up, take a moment to gather your ingredients and equipment, ensuring everything is on hand for smooth cooking.

Step 2: Prepare the Baking Dish
Spray a 7 x 11 baking dish thoroughly with cooking spray to prevent sticking. This simple step is crucial for a clean serve and helps the casserole maintain its creamy texture. Place the greased dish on your workstation, ready for the seafood.

Step 3: Assemble the Seafood
Cut the haddock into 1.5-inch chunks and arrange them evenly in the prepared baking dish. Next, add the large shrimp and scallops, ensuring a beautiful mix of seafood. This combination will provide delicious flavors and textures, making your Seafood Casserole a standout dish.

Step 4: Season the Seafood
Generously season the seafood with sea salt and pepper, then sprinkle in the minced garlic. These flavors will deeply infuse your casserole, creating a mouthwatering aroma as it bakes. Mix gently with your hands to ensure each piece is well-coated.

Step 5: Add the Cream and Cheese
Pour the heavy cream over the seafood mixture, letting it create a luscious coating. Randomly sprinkle shredded Swiss cheese on top, followed by a dash of paprika for color and warmth. If using, add grated Parmesan for an extra layer of flavor.

Step 6: Bake the Casserole
Transfer your assembled Seafood Casserole to the preheated oven and bake for 15 to 20 minutes. Keep a close eye on it; the shrimp should be pink and slightly curled while the top becomes bubbling and golden. This visual cue indicates that the seafood is perfectly cooked.

Step 7: Serve and Enjoy
Once baked, remove the casserole from the oven and let it cool for a couple of minutes. This brief resting time helps the flavors meld beautifully. Now, your comforting Seafood Casserole is ready to be served, either on its own or with a side of buttery herb rice for a delightful meal.

Expert Tips for Seafood Casserole

Don’t Overbake: Keep a close watch while baking; overcooking can make shrimp tough and rubbery. Pull it out as soon as the seafood is pink and bubbling.
Prep Ahead: You can assemble the Seafood Casserole a few hours in advance, covering it with plastic wrap. Just pop it in the oven to bake right before dinner.
Taste the Sauce: Before baking, taste the heavy cream mixture and adjust the seasonings if needed. It ensures that your casserole bursts with flavor.
Mix & Match: Feel free to substitute seafood types or omit scallops. You can use crab or add a mix of your favorite shellfish for a unique twist.
Reheating Right: If you have leftovers, reheat in the oven to maintain the casserole’s lovely creamy texture. Microwaving can make the seafood rubbery.

Seafood Casserole Variations & Substitutions

Feel free to make this seafood casserole your own with these tantalizing twists!

Crab Delight: Substitute shrimp with tender crab meat for an elegant flavor twist, perfect for special occasions.
Fish Swap: Try using cod or catfish instead of haddock for a change in taste profile that still feels comforting.
Scallop-Free: Omit scallops entirely for a shrimp-focused experience that allows the flavors of the other ingredients to shine.
Spicy Kick: Add diced jalapeños or a sprinkle of cayenne pepper for a delightful heat that warms your palate. Embrace this fiery option if you enjoy some spice in your meals!
Herb-Infused: Incorporate fresh herbs like parsley or dill for an aromatic touch that elevates the dish. They add a layer of freshness that really brings the seafood to life.
Veggie Boost: Toss in spinach or peas for added nutrition; they blend beautifully into the creamy base without overwhelming the flavors. This could make your casserole even more colorful and heart-healthy!
Cheese Variation: Experiment with different cheeses, like cheddar or Gruyère, to create a unique flavor profile that may become your new favorite. Each cheese lends a different character to the casserole.

Feel inspired? For more seafood ideas, don’t forget to check out my Spicy Southern Casserole or the comforting Big Mac Casserole.

What to Serve with Easy Seafood Casserole

Looking to create a complete meal that will impress your family and friends?

Buttered Herb Rice: This fluffy side adds a subtle earthiness that perfectly balances the creamy casserole. The herb-infused flavor will elevate each bite of seafood.
Garlic Bread: Golden, crusty bread is ideal for soaking up the rich sauce in the casserole. Serve warm with a sprinkle of parsley to brighten up the plate.
Crisp Green Salad: A light, refreshing salad of mixed greens and tangy vinaigrette offers a nice textural contrast to the creamy casserole, awakening the palate.
Steamed Asparagus: Tender-crisp asparagus drizzled with lemon complements the seafood beautifully, adding a burst of color and freshness to your meal.
Chardonnay: A chilled glass of Chardonnay enhances the flavors of the seafood, its crisp acidity cutting through the richness of the casserole.
Lemon Sorbet: End on a sweet note with a refreshing lemon sorbet that cleanses the palate and leaves you feeling satisfied.

How to Store and Freeze Seafood Casserole

Fridge: Store leftovers in an airtight container for up to 3 days. Keeping the casserole covered will help retain moisture and flavor.

Freezer: If you want to save it longer, freeze the casserole for up to 3 months. Ensure it’s in a freezer-safe container to prevent freezer burn.

Reheating: When ready to enjoy, thaw in the fridge overnight and reheat in the oven at 350°F (175°C) until warmed through, allowing the creamy texture to come back to life.

Freshness Tip: For the best taste, consume the Seafood Casserole within the suggested timeframes.

Make Ahead Options

Preparing this Easy Seafood Casserole ahead of time is a fantastic way to save precious minutes on busy nights! You can assemble the entire casserole up to 24 hours before baking. Simply prepare it through Step 5, cover it tightly, and refrigerate. The seafood will stay fresh if sealed properly, ensuring no flavors are lost. When you’re ready to serve, simply bake straight from the fridge, adding an extra 5-10 minutes to the cooking time for best results. Reheating leftovers is also hassle-free: just pop them in the oven to preserve the creamy texture, so you can enjoy this comforting Seafood Casserole just as delicious as the first time!

Seafood Casserole Recipe FAQs

What type of seafood works best for this casserole?
Absolutely! For this Seafood Casserole, haddock is a great choice due to its firm texture and mild flavor. However, you can easily substitute it with halibut or cod if desired. If you want to try something different, crab or even mixed shellfish can work wonders, adapting the dish to your taste preference.

How should I store leftovers from the casserole?
Leftovers can be stored in an airtight container in the refrigerator for up to 3 days. Just be sure to keep it tightly covered to retain its moisture and flavor. When ready to enjoy, you can reheat gently in the oven to prevent drying out.

Can I freeze the Seafood Casserole for later use?
Yes, you can freeze the casserole for up to 3 months! To do this, let it cool completely after baking, then transfer it to a freezer-safe container. Make sure it’s tightly sealed to prevent freezer burn. When you’re ready to enjoy it, thaw in the refrigerator overnight and reheat at 350°F (175°C) until warmed through, ensuring the creamy texture remains intact.

How can I tell if the seafood is overcooked?
Very! Keep an eye on your casserole while it bakes. Overcooked shrimp will become tough and rubbery. You’ll know it’s perfectly cooked when the shrimp are pink, slightly curled, and the casserole is bubbling.

What if I have dietary restrictions or allergies?
No worries! This Seafood Casserole can be easily adapted. If someone has a shellfish allergy, you could make it with just fish or opt for a seafood mix that suits everyone’s needs. Additionally, check with your local market for allergen-free substitutes for cream and cheeses if needed.

How long can I keep the Seafood Casserole in the freezer?
The Seafood Casserole can be frozen for a maximum of 3 months. When you’re ready to eat it, please ensure you thaw it overnight in the refrigerator before reheating, as this will help in preserving the flavors and creamy texture.