Name: Baked Seafood Casserole: Creamy Comfort for Cozy Nights
Prep time: 15 min
Cook time: 25 min
Total time: 45 min
Ingredients: 1 pound Shrimp (Fresh or frozen, peeled and deveined); 1 pound Scallops (Fresh or frozen); 1 cup Crab Meat (Use fresh or imitation; can be omitted); 4 tablespoons Unsalted Butter (Base for the sauce); 1/4 cup All-Purpose Flour (Gluten-free flour is an excellent substitute); 1 cup Milk (Use non-dairy milk for a lighter option); 1 cup Heavy Cream (Can replace with half-and-half if desired); 2 cloves Garlic (Minced); 2 tablespoons Lemon Juice (Offers acidity to balance flavors); 1 tablespoon Dijon Mustard (Adds a subtle tang); 1 tablespoon Old Bay Seasoning (Signature flavor for seafood); 1 teaspoon Salt (To taste); 1 teaspoon Black Pepper (To taste); 1 cup Panko Breadcrumbs (Provides a crispy topping); 2 tablespoons Melted Butter (For mixing with breadcrumbs); 1/4 cup Parmesan Cheese (Freshly grated for best flavor); 1/4 cup Fresh Parsley (Optional garnish)

There’s something magical about pulling a bubbling Baked Seafood Casserole from the oven, filling the kitchen with the irresistible aroma of garlic, lemon, and creamy goodness. This comforting dish harmoniously mingles shrimp, scallops, and crab meat, making it a showstopper for any occasion—whether it’s a cozy weeknight dinner or a gathering with friends. Plus, it’s incredibly easy to prepare, even for those just starting out in the kitchen. With its flexible ingredients, you can customize this recipe to fit your taste or what you have on hand. Curious about the secret to the perfect crunchy topping that makes each mouthful irresistible? Let’s dive in!

Why is This Baked Seafood Casserole a Must-Try?

Comforting, Creamy Delight: This Baked Seafood Casserole combines the warmth of home-cooked comfort food with a luxurious creamy sauce.

Flexible Ingredients: You can easily adapt the recipe by swapping in your favorite seafood, like lobster or mussels, or even sneak in some veggies for added nutrition.

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Quick to Prepare: In just a short time, you can transform simple ingredients into an impressive baked dish, making it perfect for spontaneous gatherings.

Crowd-Pleasing Flavor: With the perfect blend of garlic, lemon, and Old Bay seasoning, it’s a guaranteed hit for seafood lovers and newcomers alike.

Convenient Leftovers: Not only does it taste amazing, but you can savor the flavors all week! Store leftovers for easy reheating or enjoy it alongside a simple green salad or crusty bread for a full meal.

For a different twist, consider pairing it with Oven Baked Cheesy Tacos for the ultimate feast!

Baked Seafood Casserole Ingredients

For the Seafood
• Shrimp – Fresh or frozen, peeled and deveined for a juicy seafood flavor.
• Scallops – Adds tenderness and a sweet seafood taste; fresh or frozen works beautifully.
• Crab Meat – Use fresh or imitation for richness; can be omitted if desired.

For the Creamy Sauce
• Unsalted Butter – The base for your creamy sauce; unsalted gives you more control.
• All-Purpose Flour – Thickens the sauce; gluten-free flour is an excellent substitute.
• Milk – Creates the body of the sauce; consider using non-dairy milk for a lighter option.
• Heavy Cream – Adds luxurious richness; you can replace it with half-and-half if desired.
• Garlic – Minced for enhanced aroma and irresistible flavor.
• Lemon Juice – Offers acidity to balance the rich flavors perfectly.
• Dijon Mustard – Adds a subtle tang that complements the seafood beautifully.
• Old Bay Seasoning – A signature flavor for seafood dishes; try Cajun seasoning if you can’t find it.
• Salt and Black Pepper – Essential for enhancing the overall taste and balance.

For the Crunchy Topping
• Panko Breadcrumbs – Provides a delightful crispy topping; swap with regular breadcrumbs for a different texture.
• Melted Butter (for Topping) – Mixed with breadcrumbs for an irresistible crunch.
• Parmesan Cheese – Essential for creaminess and depth; freshly grated is recommended for the best flavor.

For Garnish
• Fresh Parsley – An optional garnish that adds freshness and a pop of color to your dish.

Step‑by‑Step Instructions for Baked Seafood Casserole

Step 1: Preheat and Prepare
Begin by preheating your oven to 375°F (190°C). While the oven is heating, grease a 9×13-inch baking dish with some olive oil or butter to ensure your Baked Seafood Casserole doesn’t stick. This step is crucial for achieving that golden, crispy finish later on.

Step 2: Sauté the Garlic
In a large skillet, heat 2 tablespoons of olive oil over medium heat. Once hot, add minced garlic and sauté for about 1 minute until fragrant but not browned. This will infuse your Baked Seafood Casserole with aromatic flavors that will delight everyone at the table.

Step 3: Cook the Seafood
Add the shrimp and scallops to the skillet, along with lemon juice, paprika, salt, and pepper. Cook for 2–3 minutes, stirring occasionally, until the shrimp turns a lovely pink and the scallops are opaque. Once cooked, set the seafood mixture aside to cool slightly while preparing the creamy sauce.

Step 4: Make the Roux
In a medium saucepan, melt 4 tablespoons of unsalted butter over medium heat. Once melted, whisk in ¼ cup of all-purpose flour, cooking for 1–2 minutes until it turns a light golden color. This roux is the base for your creamy sauce, ensuring your Baked Seafood Casserole is rich and velvety.

Step 5: Prepare the Cream Sauce
Gradually whisk in 1 cup of milk and 1 cup of heavy cream until smooth, ensuring there are no lumps. Continue cooking for 3–4 minutes until the sauce thickens and coats the back of a spoon. This creamy mixture will bring all the flavors together in your Baked Seafood Casserole.

Step 6: Incorporate Seasonings
Stir in 1 cup of grated Parmesan cheese, 1 tablespoon of Dijon mustard, and 1 tablespoon of Old Bay seasoning into the cream sauce. Season with salt and black pepper to taste, mixing until the cheese is melted and everything is well combined. This flavorful sauce is key to elevating your Baked Seafood Casserole.

Step 7: Combine Seafood and Sauce
Gently fold the cooked seafood and any crab meat into the creamy sauce until well combined. Make sure every bit of seafood is enveloped in that luscious sauce. Pour this mixture into the prepared baking dish, spreading it evenly to ensure a consistent bake.

Step 8: Prepare the Topping
In a small bowl, mix 1 cup of panko breadcrumbs with 2 tablespoons of melted butter and another ¼ cup of grated Parmesan cheese. Stir until the breadcrumbs are well coated. This crispy topping will provide a delightful crunch on your Baked Seafood Casserole once it’s done baking.

Step 9: Add the Crunch
Sprinkle the breadcrumb mixture evenly over the seafood and sauce layer in the baking dish. Make sure the topping covers the entire surface for that perfect golden brown finish. This step is what transforms your casserole into a beautiful centerpiece on your table.

Step 10: Bake to Perfection
Place the casserole in the preheated oven and bake uncovered for 20–25 minutes, or until the top is bubbly and golden brown. You’ll know it’s done when the edges are lightly crisped, and the entire dish exudes a mouthwatering aroma that fills your kitchen.

Step 11: Cool and Garnish
Once baked, remove the casserole from the oven and let it cool for about 5 minutes. This cooling period helps set the layers. Garnish with freshly chopped parsley for a touch of color and freshness before serving your delightful Baked Seafood Casserole to family and friends.

Make Ahead Options

These Baked Seafood Casserole is ideal for meal prep, allowing you to save valuable time on busy weeknights. You can prepare the creamy sauce and seafood mixture up to 24 hours in advance; simply refrigerate them in separate airtight containers to maintain their freshness. For even longer storage, assemble the entire casserole without the topping and freeze it for up to 3 months. When you’re ready to serve, thaw overnight in the refrigerator and then add the panko topping just before baking. Bake as directed for that golden, bubbly finish. This way, you can enjoy all the cozy flavors of a homemade meal with minimal effort!

Expert Tips for Baked Seafood Casserole

Thaw Your Seafood: Ensure frozen shrimp and scallops are completely thawed before cooking to prevent excess moisture, which can lead to a watery casserole.
Fresh is Best: For the richest flavor, opt for freshly grated Parmesan cheese instead of pre-shredded. Fresh cheese melts more smoothly into your creamy sauce.
Don’t Rush the Cooling: Allow the casserole to cool for a few minutes after baking. This helps it set better, making it easier to serve without falling apart.
Customize with Care: Feel free to swap seafood types or add vegetables, but don’t overload the mixture as it can affect the sauce consistency in your Baked Seafood Casserole.
Store Smartly: Keep leftovers in an airtight container in the fridge for up to 3 days. Reheating in the oven is key for restoring that crispy topping!

Baked Seafood Casserole Variations

Feel free to make this delightful dish your own with these fun and flavorful twists that will elevate your Baked Seafood Casserole!

Vegetable Boost: Add fresh spinach or bell peppers to the seafood mixture for a nutritious crunch and vibrant color. You’ll discover a delightful balance between the seafood and veggies, creating a wholesome harmony in every bite.
Spicy Kick: For those who crave heat, toss in some red pepper flakes or diced jalapeños during the sautéing process. This will turn your casserole into a tantalizing dish that keeps everyone coming back for seconds!
Different Seafood: Swap in lobster or mussels for a luxurious twist, or use your favorite fish if seafood isn’t available. This allows for a personalized flavor profile tailored to your taste, making each casserole a unique experience.
Gluten-Free: Use gluten-free breadcrumbs instead of panko for the topping and substitute all-purpose flour with cornstarch in the creamy sauce. This simple adjustment makes your casserole deliciously inclusive for guests with dietary restrictions.
Herb Infusion: Experiment with fresh herbs like dill, thyme, or tarragon instead of parsley as a garnish. Each herb brings its own distinct aroma and flavors, adding a refreshing lift to your Baked Seafood Casserole.
Cheddar Twist: Replace Parmesan cheese in the creamy sauce with sharp cheddar for a different flavor dimension. The cheesy goodness will create a rich, comforting blend that makes every forkful even more satisfying.
Egg-Free Option: If you’re looking to keep things lighter yet just as creamy, eliminate the heavy cream and use Greek yogurt to maintain that luscious quality while cutting down on calories. It’s a smart move without sacrificing taste!
Baked Potato Style: Serve your casserole in a hollowed-out baked potato for a fun presentation and an extra serving of comfort. This twist turns your meal into an eye-catching centerpiece that will impress guests!

Feel inspired to mix and match these variations as you create your own version of this Baked Seafood Casserole that’s uniquely yours! And if you’re looking for more delicious comfort options, consider trying out my Baked Cajun Salmon or Delightful Stuffed Seafood for even more flavor adventures.

What to Serve with Baked Seafood Casserole

There’s nothing quite like the warmth and comfort of a home-cooked meal, especially when it can be paired with delightful accompaniments that elevate its flavors.

Crispy Garlic Bread: This crunchy, buttery delight is perfect for scooping up the rich, creamy filling of the casserole, enhancing the overall enjoyment. Its golden crust and garlicky aroma will make everyone at the table swoon!
Fresh Green Salad: A crisp salad with mixed greens, cherry tomatoes, and a light vinaigrette provides a refreshing contrast to the hearty casserole. The brightness of the salad brightens the whole meal and adds a colorful touch to your table.
Lemon-Infused Quinoa: This nutty, fluffy dish complements the seafood’s richness while adding a healthy touch. The hint of lemon mirrors the flavors in the casserole, creating a harmonious dining experience.
Roasted Asparagus: Tender, slightly charred spears tossed in olive oil and sea salt add vibrant color and a delicious crunch. The earthy flavor balances the creamy casserole beautifully while adding a touch of elegance to the meal.
Chardonnay or Sauvignon Blanc: A chilled glass of white wine makes an ideal pairing, as its acidity and fruity notes enhance the flavors of the seafood. Sip slowly and let the pleasant tastes intertwine with every bite.
Chocolate Mousse: For dessert, a light yet decadent chocolate mousse rounds off the meal perfectly. The airy texture and rich chocolate flavors serve as a delightful contrast to the comforting seafood casserole, leaving everyone feeling satisfied and content.

Storage Tips for Baked Seafood Casserole

Room Temperature: Enjoy your Baked Seafood Casserole right out of the oven for the best flavor and texture. If left out, it can sit at room temperature for up to 2 hours before needing refrigeration.

Fridge: Store leftovers in an airtight container in the refrigerator for up to 3 days. When you’re ready to enjoy again, simply reheat in the oven for optimal texture.

Freezer: For longer storage, cool your casserole completely, wrap it tightly in plastic wrap or foil, and store it in the freezer for up to 3 months. Thaw overnight in the fridge before reheating.

Reheating: To maintain that delicious crispy topping, reheat covered in the oven at 350°F (175°C) for about 20 minutes or until heated through. Enjoy the creamy comfort of your Baked Seafood Casserole again!

Baked Seafood Casserole Recipe FAQs

What type of seafood is best to use for Baked Seafood Casserole?
Absolutely! Fresh or frozen shrimp, scallops, and crab meat (either fresh or imitation) work beautifully in this casserole. Feel free to customize with your favorite seafood or even incorporate veggies for added nutrition.

How should I store leftovers of Baked Seafood Casserole?
Leftovers should be stored in an airtight container in the refrigerator for up to 3 days. When you’re ready to enjoy it again, I recommend reheating it in the oven for the best texture. Simply cover it with foil and heat at 350°F (175°C) for about 20 minutes or until it’s warmed through.

Can I freeze Baked Seafood Casserole?
Yes, you can! To freeze, allow the casserole to cool completely, then wrap it tightly in plastic wrap or aluminum foil. It can be stored in the freezer for up to 3 months. When you’re ready to eat, thaw it overnight in the fridge and reheat in the oven at 350°F (175°C) for about 20-25 minutes.

What should I do if my Baked Seafood Casserole is too watery?
If you find your casserole is quite watery, it might be due to excess moisture from the seafood. To remedy this, ensure you thaw your frozen seafood completely and pat it dry with paper towels before adding it to the dish. If it’s already baked and watery, you could sprinkle some additional panko breadcrumbs on top before giving it a quick reheating in the oven to absorb some moisture.

Is Baked Seafood Casserole safe for people with seafood allergies?
This casserole is not safe for those with seafood allergies, as it contains shrimp, scallops, and crab meat. Always consider any dietary restrictions of your guests. If you’re looking for a non-seafood option, you could substitute with chicken or a medley of vegetables to create a delicious alternative.

Can I make Baked Seafood Casserole ahead of time?
Very! You can prepare the casserole up to the baking step, cover it tightly, and refrigerate it for up to 24 hours. When ready to cook, simply pop it in the preheated oven and bake as directed. This makes it perfect for entertaining, giving you more time to spend with your guests!