How to Make Baked Seafood au Gratin - A Step-by-Step Guide

For seafood lovers, there’s nothing quite like the rich, indulgent flavors of a baked seafood au gratin. This classic dish brings together an assortment of tender, flavorful seafood, bathed in a creamy, cheesy sauce, and topped with a golden, crunchy breadcrumb topping. It’s a luxurious and satisfying dish that is perfect for special occasions or as a comforting weeknight dinner.

Seafood au gratin is a dish that has been enjoyed for generations. Its origins can be traced back to French cu...

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Ingredients

  • 1 cup butter, divided
  • 1 onion, chopped
  • 1 green bell pepper, chopped
  • 1 cup all-purpose flour, divided
  • 1 pound fresh crabmeat
  • 4 cups water
  • 1 pound fresh shrimp, peeled and deveined
  • ½ pound small scallops
  • ½ pound flounder fillets
  • 3 cups milk
  • 1 cup shredded sharp Cheddar cheese
  • 1 tablespoon distilled white vinegar
  • 1 teaspoon Worcestershire sauce
  • ½ teaspoon salt
  • 1 pinch ground black pepper
  • 1 dash hot pepper sauce
  • ½ cup grated Parmesan cheese

Information

  • Prep Time: 25 mins
  • Cook Time: 1 hr
  • Total Time: 1 hr 25 mins
  • Servings: 8

  • Melt 1/2 cup butter in a heavy skillet. Add onion and bell pepper; sauté until tender. Mix in 1/2 cup flour and cook over medium heat for 10 minutes, stirring frequently. Stir in crabmeat, remove from the heat, and set aside.
  • In a large Dutch oven, bring water to a boil. Add shrimp, scallops, and flounder; simmer for 3 minutes. Drain, reserving 1 cup cooking liquid. Set seafood aside.
  • Preheat the oven to 350 degrees F (175 degrees C). Lightly grease one 9x13-inch baking dish.
  • In a heavy saucepan, melt remaining 1/2 cup butter over low heat. Stir in remaining 1/2 cup flour; cook, stirring constantly, for 1 minute. Gradually add milk plus 1 cup reserved cooking liquid. Increase the heat to medium and cook, stirring constantly, until mixture is thickened and bubbly. Mix in Cheddar, vinegar, Worcestershire sauce, salt, pepper, and hot sauce. Stir in cooked seafood.
  • Press crabmeat mixture into the bottom of the prepared baking dish to form a crust. Spoon seafood mixture over crust and sprinkle with Parmesan.
  • Bake in the preheated oven for 30 minutes, or until lightly browned. Serve immediately.
  • Nutrition

    566 cal.

    • Total Fat: 34g
    • Saturated Fat: 21g
    • Cholesterol: 233mg
    • Sodium: 859mg
    • Total Carbohydrate: 20g
    • Dietary Fiber: 1g
    • Total Sugars: 6g
    • Protein: 43g
    • Vitamin C: 18mg
    • Calcium: 370mg
    • Iron: 3mg
    • Potassium: 720mg