Laura's Seafood Thermidor


Use crab or lobster, or mix it up with some fish. I use individual au gratin dishes to serve. The sauce can be frozen before the topping is added.

Prep Time:
15 mins
Cook Time:
20 mins
Total Time:
35 mins
4 servings


  • ½ cup butter

  • 1 bunch green onions, chopped

  • ½ pound fresh mushrooms, chopped

  • ¼ pound peeled and deveined medium shrimp (30-40 per pound)

  • ¼ pound walleye fillets, cut into pieces

  • ¼ pound cooked lobster meat, broken into chunks

  • ¼ pound cooked crabmeat

  • 2 tablespoons dry sherry

  • ½ cup dry white wine (such as Chenin Blanc)

  • 1 (10.75 ounce) can condensed cream of shrimp soup (such as Campbell's®)

  • 1 cup half-and-half cream

  • 1 cup dry bread crumbs

  • ¼ pound shredded Cheddar cheese

  • ½ cup dry bread crumbs

  • ½ cup freshly grated Parmesan cheese

  • ¼ cup cold butter, cut into 1/2-inch pieces


  1. Preheat the oven's broiler and set the oven rack about 6 inches from the heat source.

  2. Melt 1/2 cup of butter in a large skillet over medium heat. Stir in the green onions and mushrooms, and cook until the mushrooms have softened, about 5 minutes. Stir in the shrimp and walleye; cook and stir until the shrimp have begun to turn opaque, about 2 minutes. Add the lobster and crab, and cook a few minutes to heat.

  3. Stir in the sherry and white wine. Bring to a simmer, and cook for 2 minutes. Once the shrimp and walleye are no longer translucent in the center, stir in the cream of shrimp soup, half-and-half, 1 cup bread crumbs, and Cheddar cheese until the cheese has melted, and the mixture is bubbly. Pour into a casserole dish, and sprinkle evenly with 1/2 cup breadcrumbs and the Parmesan cheese. Dot with the pieces of cold butter.

  4. Cook under the preheated broiler until the butter has melted and the bread crumbs are golden brown.

Nutrition Facts (per serving)

934 Calories
61g Fat
46g Carbs
46g Protein
Nutrition Facts
Servings Per Recipe 4
Calories 934
% Daily Value *
Total Fat 61g 78%
Saturated Fat 37g 183%
Cholesterol 272mg 91%
Sodium 1819mg 79%
Total Carbohydrate 46g 17%
Dietary Fiber 4g 14%
Total Sugars 6g
Protein 46g
Vitamin C 14mg 70%
Calcium 602mg 46%
Iron 5mg 28%
Potassium 987mg 21%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.

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