Go Back
–+ servings
“Baked seafood gratin topped with golden-brown cheese, shrimp, and scallops, garnished with fresh parsley.”

Seafood Gratin

Elegant yet easy French-style seafood gratin baked in a creamy white wine sauce, topped with Gruyère, Parmesan, and buttery breadcrumbs. The ultimate special-occasion dish that looks restaurant-fancy but uses simple frozen seafood and one baking dish.
Print Recipe Pin Recipe
Prep Time 20 minutes
Cook Time 25 minutes
Rest Time 5 minutes
Total Time 50 minutes
Servings: 4 servings
Course: Dinner, Main Course
Cuisine: French, Seafood
Calories: 580
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Seafood Gratin
  • 1 lb Large shrimp - Peeled and deveined
  • ½ lb Scallops - Patted dry
  • ½ lb White fish cod or halibut - Cut into chunks
  • Salt and pepper - For seasoning
  • 2 tablespoon Butter - For cooking seafood
  • 4 tablespoon Butter - For sauce
  • 3 tablespoon All-purpose flour - Thickens sauce
  • 2 cups Whole milk - Warmed
  • ½ cup Heavy cream
  • ½ cup White wine - Or broth substitute
  • 3 cloves Garlic - Minced
  • 1 teaspoon Dijon mustard - Optional depth
  • Salt and white pepper - To taste
  • 1 pinch Nutmeg - Optional warmth
  • 1 cup Gruyère cheese - Shredded
  • ½ cup Parmesan cheese - Grated
  • 1 cup Panko breadcrumbs - For topping
  • 3 tablespoon Butter - Melted for breadcrumbs
  • Fresh parsley - Chopped for garnish
Optional Add-Ins
  • 1 cup Mushrooms - Sautéed
  • 1 cup Baby spinach - Wilted
  • ½ cup Lump crab meat
  • ½ cup Lobster chunks

Equipment

  • 1 9x13 inch baking dish (Glass or ceramic)
  • 1 Large skillet (For seafood and sauce)
  • 1 Whisk (To make smooth cream sauce)
  • 1 Measuring cups and spoons (For accuracy)
  • 1 Sharp knife (For cutting fish)
  • 1 Wooden Spoon (For stirring)
  • 1 Mixing bowl (For breadcrumbs)

Method
 

  1. Pat seafood dry, season with salt and pepper, and preheat oven to 375°F.
  2. Lightly cook shrimp, scallops, and fish in butter until just opaque but not fully done.
    Pan-seared shrimp and scallops in a skillet with garlic butter sauce, garnished with chopped parsley.”
  3. In same skillet, whisk butter, flour, milk, cream, and wine into a smooth, creamy base.
    “Creamy cheese sauce being whisked in a pan, showing a smooth and rich texture.”
  4. Layer seafood in baking dish, pour sauce, top with cheeses and buttered breadcrumbs.
  5. Bake until golden and bubbling, rest briefly, garnish with parsley, and serve hot.

Nutrition

Serving: 350gCalories: 580kcalCarbohydrates: 18gProtein: 42gFat: 36gSaturated Fat: 20gPolyunsaturated Fat: 2gMonounsaturated Fat: 10gCholesterol: 210mgSodium: 880mgPotassium: 520mgFiber: 1gSugar: 5gVitamin A: 850IUVitamin C: 2mgCalcium: 390mgIron: 2mg

Notes

Nutrition information is automatically calculated, so should only be used as an approximation.

Tried this recipe?

Let us know how it was!