Baked Seafood Au Gratin Recipe

Indulge in this decadent Baked Seafood Au Gratin! Fresh seafood, a creamy cheese sauce, and a crispy crabmeat crust combine for an unforgettable comfort food experience. Perfect for a special occasion or a cozy weeknight dinner. Serve with crusty French bread and a simple green salad for a complete meal.

Prep Time 30 mins
Cook Time 65 mins
Calories 556.8 kcal
Protein 74g
Rating 5.0 (2 Reviews)
Baked Seafood Au Gratin

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Recipe Author

Chef Forktionary, author of this recipe

Passionate home cook & Forktionary contributor.

Ingredients for Baked Seafood Au Gratin

  • 1 medium onion, chopped
  • Red Bell Pepper
  • 1/2 cup olive oil
  • 1/2 cup butter
  • All Purpose Flour
  • Fresh Crabmeat
  • 4 cups water
  • 1 pound shrimp (peeled and deveined)
  • Small Scallop
  • Cod Fish Fillet
  • Button Mushrooms
  • 3 cups milk
  • 1 cup chicken broth
  • Sharp Cheddar Cheese
  • 1 tablespoon Worcestershire sauce
  • 1 teaspoon salt
  • Ground Black Pepper
  • Hot Pepper Sauce
  • 1/2 cup grated Parmesan cheese
  • Fresh Parsley
  • Sherry Wine

How to Make Baked Seafood Au Gratin

  1. In a heavy skillet, sauté 1 medium onion, chopped, and 1 green bell pepper, chopped, in 1/2 cup olive oil over medium heat until tender (about 5-7 minutes).
  2. Stir in 1/2 cup all-purpose flour and cook for 10 minutes, stirring frequently, until lightly browned.
  3. Stir in 1 pound lump crabmeat. Remove from heat and set aside.
  4. In a large Dutch oven, bring 4 cups water to a boil.
  5. Add 1 pound shrimp (peeled and deveined), 1 pound scallops, and 1 pound flounder fillets. Simmer for 3 minutes.
  6. Drain, reserving 1 cup of the cooking liquid. Set seafood aside.
  7. In a heavy saucepan, melt 1/2 cup butter over low heat.
  8. Whisk in 1/2 cup all-purpose flour and cook for 1 minute, stirring constantly, to make a roux.
  9. Gradually whisk in 3 cups milk and 1 cup chicken broth along with the reserved 1 cup cooking liquid.
  10. Increase heat to medium. Cook, stirring constantly, until thickened and bubbly (about 5-7 minutes).
  11. Stir in 2 cups shredded cheddar cheese, 1/4 cup dry sherry, 1 tablespoon Worcestershire sauce, 1 teaspoon salt, 1/2 teaspoon black pepper, and a dash of hot sauce.
  12. Stir in the cooked seafood, 1 cup sliced mushrooms, and 1/4 cup chopped fresh parsley.
  13. Preheat oven to 350°F (175°C).
  14. Lightly grease a 9x13 inch baking dish.
  15. Press the crabmeat mixture into the bottom of the prepared pan.
  16. Spoon the seafood mixture over the crabmeat crust and sprinkle with 1/2 cup grated Parmesan cheese.
  17. Bake for 30-35 minutes, or until golden brown and bubbly.
  18. Let stand for 5 minutes before serving. Serve immediately.

Chef's Tip for Extra Flavor

Chef's secret: layers of flavor make a dish truly memorable! Consider what a little extra something could bring – perhaps a touch of acidity like a good vinegar or citrus zest, a hint of smokiness from paprika, a bit of umami from mushrooms or soy sauce, or a sprinkle of toasted nuts for texture. Experiment and taste as you go!

Nutrition Information (Approximate per serving)

Sodium

48 g

Sugar

7g

Fat

77g

Carbs

6g