Gourmet seafood cassolette.

Seafood gratin is a comforting baked dish that combines tender seafood with a creamy sauce and a golden, crispy topping. Rich in flavor and texture, this recipe is perfect for special dinners, holidays, or whenever you want to prepare a restaurant-style seafood meal at home.

With shrimp, scallops, and crab meat baked in a smooth cheese sauce, seafood gratin delivers a delicious balance of savory seafood flavor and creamy comfort. The crispy topping adds the perfect finishing touch, creating a satisfying contrast in every bite.

Why Seafood Gratin Is So Popular

Seafood gratin combines simple ingredients with elegant presentation. The creamy sauce keeps the seafood moist and flavorful while the baked topping creates a golden crust that adds texture and richness.

This dish is versatile enough for casual family meals yet impressive enough for guests and celebrations.

Ingredients You Will Need

For the Seafood

• ½ pound shrimp, peeled and deveined
• ½ pound scallops, halved if large
• ½ pound lump crab meat or lobster meat
• 3 tablespoons olive oil
• 1 shallot, finely chopped
• 2 garlic cloves, minced
• ½ teaspoon salt
• ¼ teaspoon black pepper
• ¼ teaspoon red pepper flakes (optional)

For the Creamy Sauce

• 2 tablespoons olive oil
• 2 tablespoons all-purpose flour
• ½ cup dry white wine
• 1 cup seafood or fish stock
• ½ cup heavy cream
• ½ cup grated Gruyere or Parmesan cheese
• ½ teaspoon Dijon mustard
• 1 tablespoon lemon juice
• 1 tablespoon fresh parsley, chopped

For the Topping

• ½ cup panko breadcrumbs
• ¼ cup grated Gruyere or Parmesan cheese

These ingredients create a creamy seafood casserole with rich flavor and a crispy baked finish.

Step-by-Step Instructions

1. Cook the Seafood