Name: Creamy Seafood Casserole: Quick Comfort for Any Night
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Ingredients: 1 lb Haddock (can be substituted with cod or halibut); 1 lb Scallops (can be omitted or replaced with crab); 1 lb Large Shrimp (smaller shrimp may be used); 3-4 cloves Garlic (minced); 1 cup Heavy Cream (can be increased to 3/4 cup or substituted with half-and-half); 1 cup Shredded Swiss Cheese (may substitute with mozzarella or Gruyère cheese); 1/2 cup Grated Parmesan (for topping); 1 tsp Paprika; to taste Sea Salt; to taste Pepper

As I stood in my kitchen, the aroma of garlic and melting cheese filled the air, instantly transporting me to the cozy seaside bistros where seafood is the star. This Easy Seafood Casserole is not just a dish; it’s a warm embrace of flavor that combines tender shrimp, succulent scallops, and rich cream—a must-try for any seafood enthusiast. In just 30 minutes, you’ll have a comforting meal that is perfect for Lent or any gathering without overwhelming your schedule or wallet. Plus, with so many substitution options, this casserole can adapt to whatever you have on hand, proving that delicious home-cooked meals can be simple and satisfying. Ready to dive into the sea of flavors? Let’s get started!

Why Choose This Seafood Casserole?

Quick to prepare: In just 30 minutes, you can have a delicious meal on the table, making it perfect for busy weeknights.
Versatile ingredients: With options to swap shrimp for crab or even toss in clams, you can customize it to your taste or what’s available in your pantry.
Creamy and comforting: The luscious blend of heavy cream and Swiss cheese creates a heavenly sauce that envelops every bite of seafood.
Crowd-pleaser: Whether it’s a family dinner or a small gathering, this dish is sure to impress and please everyone at the table.
Perfect for Lent: This Easy Seafood Casserole is ideal for satisfying your cravings while adhering to dietary restrictions—check out our Green Bean Casserole for another great Lent option!

Seafood Casserole Ingredients

For the Main Dish

Haddock – Lean fish that provides a delicate texture; can be substituted with any firm, non-oily white fish like cod or halibut.
Scallops – Sweet and tender seafood component; can be omitted or replaced with crab for diverse flavors.
Large Shrimp – Juicy and flavorful, essential for this dish; smaller shrimp may be used as a cost-effective option.
Garlic Cloves – Adds aromatic punch and depth of flavor; use 3-4 cloves, minced.

For the Creamy Sauce

Heavy Cream – Provides richness and creaminess; can be increased to 3/4 cup or substituted with half-and-half for a lighter version.
Shredded Swiss Cheese – Adds a creamy texture and nutty flavor; may substitute with mozzarella or Gruyère cheese.
Grated Parmesan – Finishing cheese that enhances flavor and adds a crispy top.

For Seasoning

Paprika – For color and a subtle smoky flavor.
Sea Salt and Pepper – Essential for seasoning the seafood to taste.

This Seafood Casserole is designed to be not only delectable but also adaptable to your personal preferences or what you have on hand!

Step‑by‑Step Instructions for Easy Seafood Casserole

Step 1: Preheat and Prepare
Begin by preheating your oven to 375°F (190°C). While the oven warms, grab a 7 x 11-inch baking dish and spray it generously with cooking spray to prevent sticking. This step ensures that your Easy Seafood Casserole will bake evenly and come out easily when it’s time to serve.

Step 2: Arrange the Haddock
Next, take your haddock, cutting it into 1.5-inch chunks. Place these neatly in the bottom of your prepared baking dish, ensuring they cover the base evenly. This creates a solid foundation for the casserole, making sure every bite is packed with delicious flavor.

Step 3: Add Seafood and Seasoning
Now, layer the succulent shrimp and tender scallops over the haddock. Sprinkle sea salt and freshly cracked pepper over the entire seafood mix to enhance the flavors. This seasoning will help elevate your Easy Seafood Casserole, ensuring each bite is bombarded with savory goodness.

Step 4: Introduce the Garlic
Spread minced garlic evenly over the seafood. This aromatic addition will fill your kitchen with a lovely fragrance while baking. The garlic will meld beautifully with the other ingredients, creating a rich, mouthwatering flavor profile that’s characteristic of a comforting Seafood Casserole.

Step 5: Pour the Cream
Pour the heavy cream over the seafood mixture, ensuring that it covers everything evenly. The cream will create a rich, luxurious sauce once baked, enveloping the seafood in flavor. This essential step is what makes your Easy Seafood Casserole irresistibly creamy and delicious.

Step 6: Top with Cheese and Seasoning
Sprinkle the shredded Swiss cheese over the top of the casserole, followed by a dusting of paprika and grated Parmesan. The Swiss cheese adds a delightful creaminess, while paprika contributes a pop of color and flavor. This golden topping will form a beautiful crust as it bakes.

Step 7: Bake to Perfection
Transfer the baking dish to the oven and bake for 15-20 minutes. Keep an eye on the casserole, as it’s ready when the shrimp are opaque and the seafood is bubbling harmoniously. Avoid overcooking to ensure the shrimp stays nice and moist, resulting in a perfectly baked Easy Seafood Casserole.

Expert Tips for Seafood Casserole

Watch the Time: Keep an eye on the baking time; shrimp should be opaque and not overcooked for the best texture in your Seafood Casserole.
Ingredient Flexibility: Feel free to swap seafood types based on availability and your taste; crab, clams, or even lobster can enhance the dish creatively.
Layering Matters: Make sure to arrange seafood evenly in the dish; this ensures a balanced flavor in every bite of your Seafood Casserole.
Prep Ahead: You can prepare the casserole ahead of time and refrigerate it; simply bake when you’re ready for a delicious, quick meal.
Taste Before Seasoning: Season to taste, as seafood can vary in saltiness; adjusting your sea salt and pepper will yield the best flavor for your casserole.

What to Serve with Easy Seafood Casserole?

Elevate your meal experience by pairing this creamy dish with delightful sides that enhance its flavors and textures.

Garlic Bread: Warm, buttery slices with a hint of garlic provide a crispy contrast to the creamy casserole; perfect for dipping.
Light Green Salad: Crisp, fresh greens tossed in a zesty vinaigrette cut through the richness, balancing the meal beautifully. Add cherry tomatoes and cucumbers for extra freshness.
Steamed Asparagus: Tender-crisp asparagus drizzled with lemon juice offers a bright, vibrant touch, enhancing the seafood’s natural flavors.
Lemon Rice: Fluffy rice infused with lemon zest complements the casserole’s richness, creating a harmonious blend of textures and tastes.
Coleslaw: A tangy coleslaw serves as a crunchy, refreshing side that adds a delightful contrast to the dish’s creaminess.
Chardonnay: A chilled glass of Chardonnay echoes the seafood notes in your casserole; its acidity perfectly balances the dish’s richness.
Chocolate Mousse: For dessert, a light and airy chocolate mousse offers a sweet finish that contrasts the savory seafood without overwhelming your palate.

Seafood Casserole Variations & Substitutions

Feel free to tweak this Seafood Casserole to suit your taste buds, creating a dish that’s even more delightful!

Crab or Lobster: Replace shrimp with crab or lobster for an indulgent twist; this elevates flavor and adds luxury to your casserole.
More Seafood: Mix in clams or mussels for an exciting variety of textures; they also bring a briny essence that complements the dish.
Fish Alternatives: Swap out haddock for cod or halibut for a different texture; their mild flavors still shine through in the creamy sauce.
Dairy-Free Version: Use coconut cream instead of heavy cream for richness without dairy; this gives the casserole a subtly sweet flavor that’s still creamy.
Herb Infusion: Add fresh herbs like dill or parsley for a pop of freshness; this will brighten the dish and elevate the overall flavor profile.
Extra Creaminess: Increase the heavy cream to 3/4 cup for a richer taste; the more cream, the more luscious your casserole will be!
Spicy Kick: Sprinkle red pepper flakes or hot sauce for some heat; this twist will excite the taste buds and balance out the creamy elements.
Vegetable Boost: Toss in fresh spinach or peas for a burst of color and nutrition; this will add freshness and an appealing crunch that complements the seafood perfectly.

Thinking ahead? This casserole can be a fantastic starter for your meal alongside a light salad, or why not try it with some Green Bean Casserole to complete your dinner spread? Dive into creativity and make it yours!

Make Ahead Options

These Easy Seafood Casserole preparations are perfect for busy weeknights! You can chop the haddock, shrimp, and scallops, then layer them in your baking dish up to 24 hours in advance, covering it tightly with plastic wrap to keep everything fresh and prevent drying out. The garlic can also be minced ahead of time and stored in the fridge. When you’re ready to bake, simply pour the heavy cream over the seafood, sprinkle with cheese, and pop it in the oven. This way, you’ll enjoy a comforting and delicious meal without the last-minute rush, making your dining experience just as delightful as if made fresh!

How to Store and Freeze Seafood Casserole

Fridge: Store leftover Seafood Casserole in an airtight container for up to 2 days. To maintain the best texture, reheat gently in the oven at 350°F until warmed through.

Freezer: You can freeze the casserole unbaked for up to 2 months. Cover tightly with plastic wrap and foil, then thaw in the fridge overnight before baking.

Reheating: If reheating frozen, place directly in a preheated oven at 375°F for about 30-40 minutes until heated thoroughly. Avoid microwaving to prevent the seafood from becoming rubbery.

Serving Tip: After reheating, let the casserole sit for a few minutes before serving to allow the sauce to settle back into the seafood, ensuring each bite remains flavorful and creamy.

Seafood Casserole Recipe FAQs

How can I tell if my seafood is fresh?
Absolutely! When selecting seafood, look for bright, clear eyes and a fresh scent—avoid anything with a strong fishy smell. The flesh should be firm to the touch and spring back if pressed. For frozen options, ensure there is no discoloration or freezer burn, which may affect quality.

How should I store leftover Seafood Casserole?
Leftover Seafood Casserole can be stored in an airtight container in the fridge for up to 2 days. To keep it fresh, I recommend reheating it gently in the oven at 350°F until warmed through. This way, you’ll maintain the creamy texture without compromising flavor.

Can I freeze Seafood Casserole?
Yes! To freeze unbaked Seafood Casserole, cover it tightly with plastic wrap and then aluminum foil to prevent freezer burn. It can be stored for up to 2 months. When you’re ready to enjoy it, thaw in the fridge overnight, then bake according to the original recipe instructions.

What should I do if my casserole is watery after baking?
If your casserole turns out watery, it may be due to excess moisture in the seafood or a longer baking time. To avoid this, you can pat the seafood dry with paper towels before assembling. If you find it watery after baking, gently stir in a small amount of cornstarch slurry (1 tablespoon cornstarch mixed with 1 tablespoon water), and return it to the oven for a few more minutes until thickened.

Is this Seafood Casserole suitable for people with shellfish allergies?
Not at all! This Seafood Casserole contains shellfish, particularly shrimp and scallops. If someone in your household has a shellfish allergy, consider replacing these ingredients with firm white fish like cod or make a vegetarian version with mixed vegetables or a hearty vegetable broth for a delicious alternative.

Can I use different types of seafood in this casserole?
The more the merrier! You can absolutely mix and match seafood. Feel free to substitute scallops with crab or lobster for a richer flavor. Likewise, if you have other seafood options like clams or mussels, they can add a delightful variation to your Seafood Casserole!