If you’re looking to impress your friends or treat yourself to an unforgettable meal, the Gourmet Seafood Cassolette is an absolute showstopper. Imagine creamy, wine-kissed sauce brimming with succulent shrimp, scallops, and chunks of delicate white fish, all bubbling beneath a golden crust of Gruyère, Parmesan, and fresh breadcrumbs. It’s elegance, comfort, and a French bistro fantasy come to life—all in one irresistible bake. The Gourmet Seafood Cassolette is the kind of dish that invites celebration, yet it’s surprisingly easy to put together in your own kitchen.

Ingredients You’ll Need
This Gourmet Seafood Cassolette uses a handful of thoughtfully chosen ingredients that come together for an incredibly rich and flavorful result. Each component is essential: from the sweetness of shallots and briny seafood to the creamy, cheesy topping, you’ll taste every layer. Here’s what you’ll need, along with some tips for making each ingredient shine:
- Unsalted butter (2 tablespoons): Gives the sauce a velvety base and browns beautifully with the olive oil.
- Olive oil (1 tablespoon): Adds a fruity note and prevents the butter from burning during sautéing.
- Shallots, finely chopped (2): Delicate and sweet, they melt into the sauce for subtle depth.
- Garlic, minced (2 cloves): Brings irresistible aroma and warmth—don’t skip it!
- Dry white wine (1/2 cup): Choose something you’d happily drink—a crisp, unoaked wine is perfect.
- Heavy cream (1 cup): Creates the luscious, dreamy texture that defines this dish.
- Seafood stock (1/2 cup): Boosts the oceanic flavor—if you can’t find it, chicken stock will do in a pinch.
- Dijon mustard (1 teaspoon): For a gentle tang that lifts the entire sauce.
- Cayenne pepper, optional (1/4 teaspoon): Only if you want a little heat—totally up to your preference.
- Salt (1/2 teaspoon): Essential for drawing out every nuance of flavor.
- Black pepper (1/4 teaspoon): A touch of warmth and complexity.
- Shrimp, peeled and deveined (8 ounces): Choose medium to large for the perfect bite.
- Scallops (8 ounces): Sweet, tender, and luxuriously creamy when just cooked through.
- White fish fillet, cut into chunks (6 ounces): Cod or halibut work beautifully—they hold their shape yet stay flaky.
- Gruyère cheese, grated (1/2 cup): Nutty, melty, and key to that luscious crust.
- Parmesan cheese, grated (1/4 cup): Adds savory depth and the best cheesy aroma.
- Fresh breadcrumbs (1/2 cup): Homemade are best, but panko works too for a lovely crunch.
- Fresh parsley, chopped (2 tablespoons): Brightens everything and brings a splash of color at the end.
- Lemon wedges, for serving: The spritz of fresh citrus right before digging in really makes the flavors pop.
How to Make Gourmet Seafood Cassolette
Step 1: Sauté the Aromatics
Start by preheating your oven to 375°F (190°C). In a large skillet over medium heat, melt the unsalted butter with the olive oil. When it sizzles, add the finely chopped shallots and minced garlic. Let them cook gently until they’re soft and fragrant—about 2 to 3 minutes. This aromatic base is where the magic happens, setting the stage for all the flavors to come.
Step 2: Deglaze and Build the Sauce
Next, pour in the dry white wine to deglaze the pan, stirring up any golden bits clinging to the skillet. Allow the wine to simmer and reduce by half; this concentrates the flavor and cooks off any harshness. Now stir in the heavy cream, seafood stock, Dijon mustard, optional cayenne, salt, and pepper. Let the mixture simmer for about 5 minutes, until it thickens ever so slightly and turns irresistibly velvety.
Step 3: Add the Seafood
Gently fold in the shrimp, scallops, and fish chunks. Cook them in the sauce for just 3 to 4 minutes—they should only start to firm up. Don’t worry if they’re not cooked all the way through; they’ll finish in the oven. The brief stint on the stovetop ensures every piece is enveloped in that savory, creamy sauce.
Step 4: Assemble the Cassolette
Spoon the seafood and sauce mixture into individual ramekins for a classic French presentation, or use a baking dish if you’re serving family style. Sprinkle the Gruyère and Parmesan evenly over the top, followed by the fresh breadcrumbs. This cheesy, crunchy layer is what gives Gourmet Seafood Cassolette its signature bubbling crust.
Step 5: Bake to Golden Perfection
Bake the cassolette for 12 to 15 minutes, or until the top is golden brown and the sauce is bubbling around the edges. If you like an extra-crispy finish, you can pop it under the broiler for a minute or two—just keep an eye on it so it doesn’t burn. Once it’s out of the oven, shower with chopped parsley and serve with lemon wedges for that zesty final touch.
How to Serve Gourmet Seafood Cassolette

Garnishes
Freshly chopped parsley sprinkled on top provides color and a touch of herbal brightness, beautifully offsetting the richness. Don’t forget the lemon wedges—giving each serving a good squeeze will lift all those decadent flavors and awaken your palate. If you want to get a little fancy, a drizzle of high-quality olive oil just before serving is delightful, too.
Side Dishes
The best way to complement your Gourmet Seafood Cassolette is with something simple and fresh. A loaf of crusty bread is practically a must—it’s perfect for mopping up all the creamy sauce. Pair with a crisp green salad dressed with a punchy vinaigrette, or some simply steamed asparagus or green beans for a little crunch and color. The goal is to keep the sides light so the cassolette remains the star.
Creative Ways to Present
For an elegant dinner party, serve the cassolette in individual ramekins or small cocottes. This not only makes each guest feel special, but also keeps all the flavors concentrated and beautiful. For a cozy family meal, a single gratin dish lets everyone dig in together. If you’re feeling adventurous, you can even spoon the cassolette filling into small puff pastry shells for a gourmet appetizer twist.
Make Ahead and Storage
Storing Leftovers
Leftovers of Gourmet Seafood Cassolette keep very well for up to two days in the refrigerator. Allow the dish to cool completely, then cover tightly with foil or transfer to an airtight container before refrigerating. The flavors continue to meld, making for a delicious encore meal!
Freezing
While this dish is best enjoyed fresh, you can freeze it if you must. Assemble the cassolette right up to the point before baking, then wrap it well and freeze. When you’re ready, bake straight from the freezer (adding a few more minutes to the cooking time) until bubbly and golden. Bear in mind that cream sauces can separate a little after freezing, but a gentle stir before serving usually brings everything back together.
Reheating
For the tastiest results, reheat your leftover cassolette in a 350°F (175°C) oven until it’s thoroughly warmed and the topping is crisp, about 15 to 20 minutes. Avoid microwaving if possible—the oven preserves that coveted crust and prevents the seafood from becoming rubbery.
FAQs
Can I use different types of seafood in my Gourmet Seafood Cassolette?
Absolutely! The beauty of this dish is its versatility. Feel free to swap in chunks of lobster, mussels, or even crab depending on what’s available or what you love best. Just be sure to adjust cooking times as needed so nothing gets overcooked.
What type Main Course
Choose a dry, unoaked white wine like Sauvignon Blanc or Pinot Grigio. You want something crisp and fresh that won’t overpower the delicate flavors of the seafood.
Can I make Gourmet Seafood Cassolette ahead of time?
Yes! Prep everything up to the baking step—just keep it covered in the fridge. Bake it off right before serving for the freshest results. You may need to add a couple more minutes to the baking time if starting from cold.
Is there a substitute for seafood stock?
If you can’t find seafood stock, chicken stock works as an alternative. For a more “seafood-forward” flavor, simmer shrimp shells or fish trimmings with aromatics and water for a quick homemade version.
How do I prevent the seafood from overcooking?
The key is to partially cook your shrimp, scallops, and fish in the sauce just until they start to firm, then let the oven finish the job. This keeps everything tender and juicy, never rubbery.
Final Thoughts
There’s truly nothing like gathering around the table to enjoy a bubbling, aromatic Gourmet Seafood Cassolette. With its elegant flavors and inviting textures, this dish is both a comfort and a celebration. If you’re ready to impress or simply spoil yourself, dive in and give this recipe a try—I have a feeling it’ll earn a permanent spot in your repertoire!
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Gourmet Seafood Cassolette Recipe
- Total Time: 50 minutes
- Yield: 4 servings 1x
- Diet: Non-Vegetarian
Description
Indulge in the rich flavors of this gourmet seafood cassolette – a creamy and decadent French-inspired dish featuring shrimp, scallops, and fish, baked to perfection with a cheesy breadcrumb topping.
Ingredients
For the Casserole:
- 2 tablespoons unsalted butter
- 1 tablespoon olive oil
- 2 shallots, finely chopped
- 2 cloves garlic, minced
- 1/2 cup dry white wine
- 1 cup heavy cream
- 1/2 cup seafood stock
- 1 teaspoon Dijon mustard
- 1/4 teaspoon cayenne pepper (optional)
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
- 8 ounces shrimp, peeled and deveined
- 8 ounces scallops
- 6 ounces white fish fillet (such as cod or halibut), cut into chunks
For the Topping:
- 1/2 cup grated Gruyère cheese
- 1/4 cup grated Parmesan cheese
- 1/2 cup fresh breadcrumbs
- 2 tablespoons fresh parsley, chopped
- Lemon wedges for serving
Instructions
- Preheat the Oven: Preheat the oven to 375°F (190°C).
- Sauté Aromatics: In a skillet, melt butter with olive oil over medium heat. Add shallots and garlic, cooking until softened and fragrant.
- Deglaze and Simmer: Deglaze the pan with white wine, simmering until reduced by half. Stir in cream, seafood stock, Dijon mustard, cayenne pepper, salt, and black pepper. Simmer until slightly thickened.
- Add Seafood: Add shrimp, scallops, and fish, cooking gently for 3 to 4 minutes until just beginning to firm.
- Assemble and Bake: Transfer the mixture into individual ramekins or a baking dish. Sprinkle with Gruyère, Parmesan, and breadcrumbs. Bake for 12 to 15 minutes, until golden and bubbling.
- Finish and Serve: Garnish with parsley and serve with lemon wedges.
Notes
- For extra depth of flavor, add a splash of brandy when deglazing.
- This dish pairs wonderfully with crusty bread or a simple green salad.
- Best served fresh, but leftovers can be gently reheated in the oven.
- Prep Time: 20 minutes
- Cook Time: 30 minutes
- Category: Main Course
- Method: Stovetop, Baking
- Cuisine: French
Nutrition
- Serving Size: 1 portion
- Calories: 520
- Sugar: 2 g
- Sodium: 670 mg
- Fat: 34 g
- Saturated Fat: 18 g
- Unsaturated Fat: 14 g
- Trans Fat: 0 g
- Carbohydrates: 15 g
- Fiber: 1 g
- Protein: 37 g
- Cholesterol: 185 mg