Name: Classic Seafood Gratin: A Comforting Coastal Delight
Prep time: 25 min
Cook time: 25 min
Total time: 55 min
Ingredients: 400 g Mixed Seafood (shrimp, scallops, white fish fillets) (fresh or frozen, thawed and patted dry); 2 tablespoons Olive Oil (enhances flavor and helps cook aromatics); 1 small Onion (finely chopped); 2 cloves Garlic (minced); 200 ml Heavy Cream (substitute coconut milk for dairy-free option); 100 ml Milk (balances the sauce consistency); 50 g Butter (adds richness for the roux); 2 tablespoons All-Purpose Flour (acts as a thickening agent); 100 g Grated Cheese (Gruyère or cheddar) (adds flavor and texture); 50 g Breadcrumbs (mix with melted butter for extra crunch); Salt and Pepper (to taste); Fresh Parsley (for garnish)

As I stood in the kitchen, a warm breeze wafted in, carrying the salty scent of the sea. That’s when I decided to treat my family to a Classic Seafood Gratin, a dish that effortlessly brings the coastal charm right to our dining table. With its luxurious blend of tender seafood nestled in a creamy, rich sauce and topped with a crispy, golden crust, this gratin is a hug in a dish. Not only does it deliver restaurant-quality flavor right at home, but it’s also incredibly customizable and perfect for make-ahead meals, fitting effortlessly into both busy weeknights and special occasions. As I gathered my ingredients, I felt that familiar excitement—who can resist such a comforting and delicious seafood dish? Ready to recreate this coastal classic in your kitchen? Let’s dive in!

Why is this Seafood Gratin Special?

Comforting at its core, this Classic Seafood Gratin blends luscious seafood with a creamy sauce, turning any meal into a special occasion. Easily customizable, swap in your favorite seafood or try a dairy-free version for inclusivity. Great for gatherings, it elegantly serves up to a crowd and pairs beautifully with crusty bread. Make-ahead magic allows you to prepare it earlier in the day, saving precious time. Inspired by coastal cuisine, every bite immerses you in the warm embrace of seaside dining. Don’t skip trying this delightful dish–it’s like a touch of the ocean right at your table!

Classic Seafood Gratin Ingredients

For the Seafood
• Mixed Seafood – 400 g (shrimp, scallops, white fish fillets); fresh or frozen works, but ensure frozen seafood is thawed and patted dry to avoid excess moisture.

For the Sauce
• Olive Oil – 2 tablespoons; enhances flavor and helps cook aromatics.
• Onion – 1 small, finely chopped; serves as the aromatic base.
• Garlic – 2 cloves, minced; a flavor booster that adds depth.
• Heavy Cream – 200 ml; creates a rich sauce base; substitute coconut milk for a dairy-free option.
• Milk – 100 ml; balances the sauce consistency.
• Butter – 50 g; adds richness and is crucial for the roux.
• All-Purpose Flour – 2 tablespoons; acts as a thickening agent for the sauce.

For the Topping
• Grated Cheese – 100 g (Gruyère or cheddar); adds flavor and texture; mix cheeses for added complexity.
• Breadcrumbs – 50 g; delivers a delightful crunch on top; mix with melted butter for extra crunch.
• Salt and Pepper – To taste; essential seasonings to enhance all the flavors.
• Fresh Parsley – For garnish; adds a touch of color and freshness.

Step‑by‑Step Instructions for Classic Seafood Gratin

Step 1: Prepare the Seafood
Start by drying your mixed seafood—400 g of shrimp, scallops, and white fish—thoroughly with paper towels to prevent excess moisture. Cut the white fish into bite-sized chunks, then season all the seafood generously with salt and pepper. This creates a flavor foundation for your Classic Seafood Gratin.

Step 2: Create Aromatic Base
Preheat your oven to 200°C (400°F) while you heat 2 tablespoons of olive oil in a large skillet over medium heat. Add the finely chopped onion and sauté for about 5 minutes until it becomes soft and translucent. Then, stir in the minced garlic and cook for an additional 1-2 minutes until fragrant, enhancing the flavor profile of your dish.

Step 3: Make the Creamy Sauce
Once the garlic is aromatic, reduce the heat slightly and add 50 g of butter to the skillet. Allow it to melt completely, then whisk in 2 tablespoons of all-purpose flour, creating a roux. Gradually pour in 100 ml of milk and 200 ml of heavy cream, whisking continuously for about 3-4 minutes until the sauce thickens and becomes luscious—and the star of your Classic Seafood Gratin.

Step 4: Combine Seafood with Sauce
Remove the skillet from the heat and gently fold the seasoned seafood into the creamy sauce. Be careful not to break the delicate pieces apart. Taste the mixture and adjust the seasoning, adding more salt and pepper if needed. This harmonious blend of seafood and sauce will elevate your gratin to new heights.

Step 5: Add Topping
Transfer the seafood and sauce mixture into a greased baking dish, ensuring it’s evenly spread. Next, sprinkle 100 g of grated cheese and 50 g of breadcrumbs on top. Make sure to cover the entire surface for that beautiful golden crust. For extra crunch, consider mixing the breadcrumbs with a bit of melted butter before adding.

Step 6: Bake to Perfection
Place the baking dish in the preheated oven and bake for 20-25 minutes. Keep an eye on your Classic Seafood Gratin as it bakes; it’s ready when the top is golden brown and the edges are bubbling. You’ll know it’s done when the seafood is tender and cooked through.

Step 7: Serve and Garnish
Once baked, remove your gratin from the oven and let it rest for 5 minutes. This allows the flavors to settle and the sauce to thicken slightly. Before serving, garnish with freshly chopped parsley for a pop of color and freshness, enhancing the coastal charm of your dish.

Expert Tips for Classic Seafood Gratin

Choose Quality Seafood: Use fresh mixed seafood whenever possible. If opting for frozen, ensure it’s completely thawed and dried to prevent a soggy gratin.
Adjust the Creaminess: For a lighter sauce, substitute half the heavy cream with milk. It will maintain flavor while reducing richness for those who prefer a healthier version.
Prepare Ahead: Assemble your gratin earlier in the day and refrigerate it before baking. This saves time and allows flavors to meld beautifully; just adjust the baking time accordingly.
Crunchy Topping Trick: For an extra crunchy topping, mix the breadcrumbs with melted butter before sprinkling them over the cheese. This little addition makes a world of difference!
Add Fresh Herbs: Consider enhancing flavor by adding fresh herbs like dill or thyme to your creamy sauce. This adds complexity and freshness to your Classic Seafood Gratin.

Make Ahead Options

These Classic Seafood Gratin preparations are perfect for busy home cooks looking to save time! You can prep the entire dish up to 24 hours in advance by assembling the seafood and creamy sauce and storing it in the refrigerator. Simply cover the baking dish tightly with plastic wrap to keep it fresh and prevent drying. When you’re ready to serve, just sprinkle the cheese and breadcrumbs on top, then bake it straight from the fridge; add an extra 5 minutes to the cooking time to ensure it’s warmed through. This approach allows you to enjoy that comforting, restaurant-quality dish with ease, making mealtime a breeze!

Storage Tips for Classic Seafood Gratin

Fridge: Store any leftover gratin in an airtight container for up to 2 days. Ensure it’s cooled before sealing to maintain texture.

Reheating: Reheat in the oven at 180°C (350°F) for 10-15 minutes, covered with foil to prevent drying out. Enjoy the creamy flavors again!

Freezer: Freezing is not recommended due to potential texture changes, but if necessary, wrap tightly and freeze for up to 1 month.

Make-Ahead: You can assemble the gratin ahead of time and refrigerate it before baking; just remember to adjust the bake time!

Classic Seafood Gratin Variations & Substitutions

Dive into a world of flavor and texture by customizing your Classic Seafood Gratin!

Dairy-Free: Substitute heavy cream and milk with full-fat coconut milk and vegan butter for a creamy, rich flavor without dairy. Don’t forget to pick a delightful dairy-free cheese to complement your dish.
Herb-Infused: Add fresh herbs like dill, thyme, or parsley to the creamy sauce for a burst of fresh flavor. Just a few leaves can take your gratin to a whole new level!
Seafood Switch-Up: Instead of mixed seafood, try using crab, lobster, or mussels. Each option brings its unique texture and taste, creating a new experience while still keeping the essence of the dish.
Extra Crunch: For an even more exciting topping, consider mixing your breadcrumbs with some crushed nuts like almonds or hazelnuts for a delightful twist on texture, providing a beautiful crunch and nuttiness.
Spicy Kick: If you love heat, add a pinch of red pepper flakes to the creamy sauce or layer in some sliced jalapeños for a tantalizing, spicy version of your gratin.
Lightened Up: To reduce calories, swap half the cream with a combination of milk and chicken or vegetable broth. This creates a lighter sauce while still delivering delicious flavors.
Flavorful Cheese Mix: Experiment by mixing different cheeses, like Parmesan and Gouda, to deepen the flavor profile of your gratin. Each cheese will lend its own unique taste and richness.
Pasta Layer: For a heartier meal, incorporate a layer of cooked pasta into your seafood mixture. This can make the gratin more filling and adds a delightful mix of textures.

Remember, the beauty of the Classic Seafood Gratin lies in its versatility. Whichever combination you choose, you’re in for a treat! If you’re looking for a little inspiration beyond seafood, you might enjoy a different culinary journey with my Shrimp Balls Twist. Happy cooking!

What to Serve with Classic Seafood Gratin

Elevate your dining experience by pairing this delightful dish with warm, comforting sides that will create a complete meal.

Crusty Bread: The ideal companion for soaking up the creamy sauce, complementing the gratin’s richness perfectly.
Refreshing Salad: A light, crisp salad with mixed greens and a tangy vinaigrette adds brightness to balance the gratin’s flavors.
Roasted Vegetables: Seasoned zucchini, bell peppers, and cherry tomatoes provide a delightful contrast with their natural sweetness and charred flavor.
Garlic Mashed Potatoes: Creamy and buttery, these potatoes are perfect for those wishing to indulge in extra comfort alongside the gratin.
Sautéed Spinach: Soft, tender greens dressed with a hint of garlic offer an earthy element that melds beautifully with the seafood.
Chilled White Wine: A glass of crisp Sauvignon Blanc or Chardonnay enhances the dish’s coastal vibes, inviting warmth to the table.
Lemon Sorbet: As a refreshing dessert, this icy treat cleanses the palate after the rich seafood flavors, leaving a joyful finish.

Each of these pairings will not only complement the Classic Seafood Gratin but transform your meal into a captivating culinary experience.

Classic Seafood Gratin Recipe FAQs

How do I choose the best seafood for my gratin?
Absolutely! For the best results, aim for fresh seafood when possible. If you’re using frozen seafood, ensure it’s completely thawed and thoroughly patted dry with paper towels to eliminate excess moisture. Opt for shrimp, scallops, and white fish fillets for a delightful mix of textures and flavors!

How should I store leftovers of the seafood gratin?
Leftover gratin can be stored in an airtight container in the fridge for up to 2 days. Make sure it has cooled down completely before sealing it to maintain its wonderful texture. This way, you can enjoy those delightful flavors again in just a couple of days!

Can I freeze Classic Seafood Gratin?
Freezing isn’t generally recommended as it may alter the texture, but if you must, wrap the gratin tightly in plastic wrap or aluminum foil and freeze it for up to 1 month. When you’re ready to enjoy, let it thaw in the refrigerator overnight before reheating gently in the oven.

What’s the best way to reheat seafood gratin?
To reheat your Classic Seafood Gratin, set the oven to 180°C (350°F) and cover the dish with aluminum foil. Bake it for about 10-15 minutes until heated through. Keeping it covered helps prevent drying out, so you can savor the creaminess just like the first time!

Are there any dietary considerations I should be aware of?
Indeed! This gratin contains seafood, dairy, and gluten from breadcrumbs, so if you have allergies or dietary restrictions, consider using dairy-free cheese and coconut milk for a lighter option. Additionally, ensure all ingredients are safe for your dietary needs!

Can I make this gratin ahead of time?
Very! You can assemble the entire gratin earlier in the day, cover it, and store it in the refrigerator before baking. Just remember to adjust the baking time; it may take a few minutes longer when baked straight from the fridge. This make-ahead approach will save you time and showcase wonderful flavors!