Baked Seafood au Gratin

This family-favorite seafood gratinée (seafood au gratin) pairs shrimp, scallops, flounder, and crab in a cheesy sauce topped with Parmesan cheese.

• Preparation Time: 25 mins
• Cooking Time: 60 mins
• Total Time: 1 hr 25 mins
• Calories: 566 Calories

Ingredients

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

Recipe Instructions

Step 1

Bake in the preheated oven for 30 minutes, or until lightly browned. Serve immediately.

Step 2

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.

Step 3

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.

Step 4

Preheat the oven to 350 degrees F (175 degrees C). Lightly grease one 9x13-inch baking dish.

Step 5

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.

Step 6

Press crabmeat mixture into the bottom of the prepared baking dish to form a crust. Spoon seafood mixture over crust and sprinkle with Parmesan.