Classic Seafood Gratin: A Comforting Coastal Delight Recipe

Introduction

Classic Seafood Gratin is a comforting coastal dish that combines tender mixed seafood with a rich, creamy sauce topped with a golden, cheesy crust. Perfect for a cozy dinner, it’s both elegant and easy to prepare at home.

A close-up view of a baked dish in a white ceramic oval baking dish with handles, resting on a blue cloth on a white marbled surface. The dish has a creamy, bubbly, golden-brown cheese layer on top with seven large shrimp evenly spaced across the surface, each shrimp slightly charred and pink-orange with white flesh. Scattered green herb pieces, possibly thyme, are sprinkled over the entire top layer, adding texture and color contrast. In the blurred background, a small white bowl with green sauce and a glass of light-colored drink are visible. Photo taken with an iphone --ar 4:5 --v 7

Ingredients

  • 400 g mixed seafood (shrimp, scallops, white fish fillets), fresh or frozen, thawed and patted dry
  • 2 tablespoons olive oil
  • 1 small onion, finely chopped
  • 2 cloves garlic, minced
  • 200 ml heavy cream (substitute coconut milk for dairy-free option)
  • 100 ml milk
  • 50 g butter
  • 2 tablespoons all-purpose flour
  • 100 g grated cheese (Gruyère or cheddar)
  • 50 g breadcrumbs (mix with melted butter for extra crunch)
  • Salt and pepper to taste
  • Fresh parsley for garnish

Instructions

  1. Step 1: Prepare the seafood by drying the mixed seafood well, cutting white fish into bite-sized pieces, and seasoning generously with salt and pepper.
  2. Step 2: Preheat your oven to 200°C (400°F). Heat olive oil in a large skillet over medium heat. Add the chopped onion and sauté for about 5 minutes until soft. Stir in minced garlic and cook for 1-2 more minutes.
  3. Step 3: Add butter to the skillet and melt it. Whisk in the all-purpose flour to create a roux. Gradually pour in the milk and heavy cream while whisking continuously. Cook for 3-4 minutes until the sauce thickens.
  4. Step 4: Remove the skillet from heat and gently fold the seasoned seafood into the creamy sauce. Adjust seasoning with salt and pepper if needed.
  5. Step 5: Transfer the mixture to a greased baking dish. Evenly sprinkle the grated cheese and breadcrumbs on top. For extra crunch, mix breadcrumbs with a little melted butter before sprinkling.
  6. Step 6: Bake in the preheated oven for 20-25 minutes until the top is golden brown and the edges are bubbling.
  7. Step 7: Let the gratin rest for 5 minutes before serving. Garnish with freshly chopped parsley and enjoy.

Tips & Variations

  • Use fresh seafood when possible for the best flavor and texture.
  • For a dairy-free version, substitute heavy cream with coconut milk and use a plant-based butter alternative.
  • Add fresh herbs like dill or thyme to the sauce for extra aroma.
  • Mix breadcrumbs with melted butter before topping to achieve a crispier crust.

Storage

Store leftovers in an airtight container in the refrigerator for up to 2 days. Reheat gently in the oven at 180°C (350°F) until warmed through to maintain the crispy topping. Avoid microwaving to preserve texture.

How to Serve

A white oval dish holds a creamy baked shrimp casserole with two main visible layers: the bottom layer is a thick, pale yellow sauce with scattered green herbs mixed in, and the top layer is decorated with large, plump cooked shrimp that are orange with slight char marks, nestled evenly across the surface. The top also has a bubbly, slightly golden texture showing some melted cheese with herbs sprinkled all over. The dish sits on a wooden board against a white marbled textured background, with a deep blue cloth beside it and blurred greenery and glassware in the background. photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I use only one type of seafood for this gratin?

Yes, you can use just shrimp, scallops, or fish if preferred. The dish works well with any single seafood, though a mix adds more depth of flavor.

Is it possible to prepare the gratin in advance?

Absolutely. Assemble the gratin up to the baking step, cover, and refrigerate for a few hours before baking. This makes it convenient for meal prep or entertaining.

Print

Classic Seafood Gratin: A Comforting Coastal Delight Recipe

Classic Seafood Gratin is a comforting coastal dish featuring a creamy mixture of shrimp, scallops, and white fish baked with a rich cheese and breadcrumb topping. This recipe offers a perfect balance of flavors and textures, ideal for a cozy family dinner or a special occasion meal.

  • Author: Clara
  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Total Time: 45 minutes
  • Yield: 4 servings 1x
  • Category: Main Course
  • Method: Baking
  • Cuisine: Coastal European

Ingredients

Scale

Seafood

  • 400 g Mixed Seafood (shrimp, scallops, white fish fillets), fresh or frozen, thawed and patted dry

Sauce

  • 2 tablespoons Olive Oil
  • 1 small Onion, finely chopped
  • 2 cloves Garlic, minced
  • 200 ml Heavy Cream (substitute coconut milk for dairy-free option)
  • 100 ml Milk
  • 50 g Butter
  • 2 tablespoons All-Purpose Flour

Topping

  • 100 g Grated Cheese (Gruyère or cheddar)
  • 50 g Breadcrumbs (optionally mixed with melted butter)
  • Salt and Pepper to taste
  • Fresh Parsley for garnish

Instructions

  1. Prepare Seafood: Dry the mixed seafood thoroughly, cut the white fish fillets into bite-sized chunks, and season all the seafood generously with salt and pepper to enhance flavor.
  2. Sauté Aromatics: Preheat your oven to 200°C (400°F). In a large skillet, heat olive oil over medium heat. Add finely chopped onion and sauté for about 5 minutes until softened. Stir in the minced garlic and cook for an additional 1-2 minutes until fragrant.
  3. Make the Roux and Sauce: Add butter to the skillet and allow it to melt completely. Whisk in all-purpose flour to create a roux, cooking for about 1-2 minutes. Gradually pour in milk and heavy cream while whisking continuously. Continue whisking for 3-4 minutes until the sauce thickens to a creamy consistency.
  4. Combine Seafood and Sauce: Remove the skillet from heat and gently fold the seasoned seafood into the creamy sauce. Adjust seasoning with additional salt and pepper as needed.
  5. Prepare for Baking: Transfer the seafood and sauce mixture into a greased baking dish. Evenly sprinkle the grated cheese and breadcrumbs over the top. For extra crunch, mix the breadcrumbs with a little melted butter before sprinkling if desired.
  6. Bake the Gratin: Place the baking dish in the preheated oven and bake for 20-25 minutes, or until the top is golden brown and the edges are bubbling.
  7. Rest and Garnish: Let the gratin rest for 5 minutes after baking to set. Garnish with freshly chopped parsley before serving to add a fresh, vibrant finish.

Notes

  • Use fresh seafood whenever possible for the best flavor and texture.
  • For additional flavor, consider adding fresh herbs such as dill or thyme to the sauce.
  • Substitute heavy cream with coconut milk to make the dish dairy-free.
  • Mix breadcrumbs with melted butter before topping to enhance the crunchiness.

Keywords: Seafood Gratin, creamy seafood bake, coastal recipe, shrimp scallops fish gratin, cheesy seafood casserole

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