Seafood Cassolette: A Rich & Creamy French Classic

Indulge in the ultimate seafood experience with this elegant and surprisingly simple Seafood Cassolette recipe. Imagine tender shrimp, plump scallops, and flaky fish enveloped in a luxurious, creamy white wine sauce, all baked under a golden, crispy breadcrumb topping. This dish, often found in high-end French bistros, is the perfect way to impress guests or treat yourself to a truly special meal. Forget complicated techniques; this guide will walk you through creating a restaurant-quality cassolette right in your own kitchen. It’s rich, decadent, and ready in under 40 minutes.

Individual Seafood Cassolette ramekins topped with a golden-brown parmesan breadcrumb crust, ready to be served.
Golden-brown perfection! The crispy topping is the perfect contrast to the creamy seafood.

What is a Seafood Cassolette?

A “cassolette,” which translates to “little casserole” in French, refers to a small, individual-sized dish that is baked and served in the same vessel. A Seafood Cassolette, or “Cassolette de Fruits de Mer,” is a classic French appetizer or main course featuring a variety of seafood poached in a rich, creamy sauce. The dish is typically finished with a cheesy breadcrumb topping and broiled until bubbly and golden brown. It’s a celebration of textures and flavors, from the tender seafood to the velvety sauce and the crunchy topping.

Why You’ll Love This Seafood Cassolette Recipe

  • Incredibly Flavorful: A savory blend of garlic, shallots, white wine, and cream creates a sauce that perfectly complements the delicate seafood.
  • Elegant & Impressive: Served in individual ramekins, this dish looks and tastes incredibly gourmet, making it perfect for dinner parties and special occasions.
  • Quick & Easy: Despite its sophisticated appearance, this recipe comes together in less than 40 minutes, making it a feasible option for a weeknight indulgence.
  • Versatile: You can easily customize the seafood based on what’s fresh and available. Don’t be afraid to mix and match! For a similar rich and comforting dish, you might also enjoy this decadent lobster pot pie recipe.

The Stars of the Show: Choosing Your Seafood


The beauty of a Seafood Cassolette lies in the medley of flavors and textures. For the best results, aim for a combination of firm and tender seafood. Here are my top recommendations:

  • Shrimp: Use large, peeled, and deveined shrimp. They cook quickly and add a sweet, succulent bite.
  • Scallops: Sea scallops are ideal. If they are very large, you can slice them in half horizontally so they cook evenly with the other seafood.
  • Fish: A firm white fish works best. Cod, haddock, or halibut are excellent choices as they hold their shape well when cooked. Cut the fish into 1-inch cubes.

Ingredients You’ll Need

Ingredient Amount Notes
Butter 4 tbsp Unsalted, divided
Shallot 1 Finely minced
Garlic 2 cloves Finely minced
All-Purpose Flour 2 tbsp To thicken the sauce
Dry White Wine 1/2 cup Such as Sauvignon Blanc or Pinot Grigio
Heavy Cream 1 cup The base of our luxurious sauce
Dijon Mustard 1 tsp Adds a subtle tang
Large Shrimp 1/2 lb Peeled and deveined
Sea Scallops 1/2 lb Patted dry
Firm White Fish 1/2 lb Cut into 1-inch cubes
Panko Breadcrumbs 1/2 cup For that perfect crispy topping
Parmesan Cheese 1/4 cup Freshly grated
Fresh Parsley 2 tbsp Chopped, for garnish
Salt & Black Pepper To taste
A close-up view of the creamy seafood bake, showing tender shrimp and flaky fish in a rich white wine sauce before being topped and broiled.
The secret is in the sauce! A rich and creamy base makes all the difference.

Step-by-Step Guide to the Perfect Seafood Cassolette

Follow these simple steps to create a flawless and delicious seafood dish.

1. Sauté the Aromatics

In a large skillet over medium heat, melt 2 tablespoons of butter. Add the minced shallot and garlic and cook until softened and fragrant, about 2-3 minutes. Be careful not to let the garlic brown.

2. Create the Cream Sauce

Sprinkle the flour over the shallots and garlic, stirring constantly to cook out the raw flour taste, about 1 minute. Slowly whisk in the white wine, scraping up any browned bits from the bottom of the pan. Let it simmer for 2 minutes until it slightly reduces. Reduce the heat to low and whisk in the heavy cream and Dijon mustard. Season with salt and pepper. Let the sauce gently simmer until it thickens enough to coat the back of a spoon.

3. Gently Poach the Seafood

Add the cubed fish, shrimp, and scallops to the simmering cream sauce. Gently stir to combine and cook for 3-5 minutes, or until the shrimp is pink and the fish is just cooked through. It’s crucial not to overcook the seafood at this stage, as it will cook further in the oven.

4. Assemble and Top the Cassolettes

Preheat your oven’s broiler. In a small bowl, combine the Panko breadcrumbs, grated Parmesan cheese, and 2 tablespoons of melted butter. Divide the seafood mixture evenly among four individual oven-safe ramekins. Sprinkle the breadcrumb mixture generously over the top of each cassolette.

5. Broil to Golden Perfection

Place the ramekins on a baking sheet. Broil for 2-4 minutes, watching carefully, until the topping is golden brown and the sauce is bubbling. Garnish with fresh parsley before serving.

Pro Tips for a Flawless Cassolette

  • Don’t Overcook the Seafood: Seafood cooks very quickly. It’s better to slightly undercook it in the pan, as it will finish cooking under the broiler.
  • Pat Seafood Dry: Ensure your scallops and shrimp are patted thoroughly dry with paper towels before adding them to the sauce. This helps prevent a watery sauce.
  • Use Quality Ingredients: Since there are few ingredients, their quality really shines. Use a dry white wine you would drink and fresh, not frozen, seafood if possible.

What to Serve with Your Cassolette

This rich Seafood Cassolette is best served with simple sides that complement its flavor without overpowering it. A loaf of crusty French bread is essential for soaking up every last drop of the creamy sauce. For a perfect pairing, consider making some of our famous homemade cheesy breadsticks. A simple green salad with a light vinaigrette also provides a fresh, acidic contrast to the richness of the dish.

Frequently Asked Questions

A combination of firm and tender seafood works best. We recommend large shrimp, sea scallops, and a firm white fish like cod, haddock, or halibut. This provides a wonderful variety of textures and flavors.


Yes, you can prepare the seafood and sauce mixture a few hours ahead of time. Store it covered in the refrigerator. When ready to serve, portion it into ramekins, add the fresh breadcrumb topping, and broil just before serving for the best texture.


This dish is very rich, so it pairs best with simple sides. Crusty bread for dipping is a must! A simple green salad with a vinaigrette dressing also works well to cut through the richness of the cream sauce.


The key is to remember the seafood will cook in two stages: in the pan and under the broiler. Gently poach the seafood in the sauce on the stovetop for only 3-5 minutes, just until it’s nearly done. It will finish cooking perfectly under the broiler.


Store any leftovers in an airtight container in the refrigerator for up to 2 days. To reheat, place the cassolette in an oven at 350°F (175°C) for 10-15 minutes until warmed through. Reheating in the microwave can make the seafood rubbery.


The Perfect Seafood Cassolette Recipe

A close-up view of the creamy seafood bake, showing tender shrimp and flaky fish in a rich white wine sauce before being topped and broiled.
FL Recipes

Seafood Cassolette: A Rich & Creamy French Classic

This Seafood Cassolette recipe features a decadent mix of shrimp, scallops, and fish in a creamy white wine sauce. Topped with crispy Parmesan breadcrumbs, this elegant French dish is ready in under 40 minutes.
Prep Time 15 minutes
Cook Time 20 minutes
Total Time 35 minutes
Servings: 4 servings
Course: Appetizer, Main Course
Cuisine: French
Calories: 650

Ingredients
  

  • 4 tbsp Unsalted Butter divided
  • 1 Shallot finely minced
  • 2 cloves Garlic finely minced
  • 2 tbsp All-Purpose Flour
  • 0.5 cup Dry White Wine e.g., Sauvignon Blanc
  • 1 cup Heavy Cream
  • 1 tsp Dijon Mustard
  • 0.5 lb Large Shrimp peeled and deveined
  • 0.5 lb Sea Scallops patted dry
  • 0.5 lb Firm White Fish (Cod or Haddock) cut into 1-inch cubes
  • 0.5 cup Panko Breadcrumbs
  • 0.25 cup Parmesan Cheese freshly grated
  • 2 tbsp Fresh Parsley chopped
  • Salt and Black Pepper to taste

Equipment

  • 1 Large Skillet
  • 4 Oven-safe ramekins
  • 1 Baking Sheet

Method
 

  1. In a large skillet over medium heat, melt 2 tablespoons of butter. Add the minced shallot and garlic and cook until softened and fragrant, about 2-3 minutes.
  2. Sprinkle the flour over the aromatics, stirring for 1 minute. Slowly whisk in the white wine, simmering for 2 minutes to reduce. Reduce heat to low, then whisk in the heavy cream and Dijon mustard. Season with salt and pepper and simmer until thickened.
  3. Add the cubed fish, shrimp, and scallops to the simmering sauce. Stir gently and cook for 3-5 minutes, until the seafood is just cooked through. Do not overcook.
  4. Preheat the broiler. In a small bowl, combine Panko breadcrumbs, grated Parmesan, and 2 tablespoons of melted butter. Divide the seafood mixture among four oven-safe ramekins. Sprinkle the breadcrumb mixture over the top of each.
  5. Place ramekins on a baking sheet and broil for 2-4 minutes, watching closely, until the topping is golden brown and bubbly. Garnish with fresh parsley and serve immediately.

Nutrition

Calories: 650kcalProtein: 38gFat: 45gFiber: 1g

Notes

Tip 1: Ensure all seafood is patted very dry before adding it to the sauce to prevent it from becoming watery.
Tip 2: Watch the cassolettes very carefully under the broiler, as the breadcrumb topping can go from golden to burnt in seconds.
Tip 3: For an extra layer of flavor, add a splash of brandy or Pernod with the white wine.
Keyword Creamy Seafood Bake,Seafood Cassolette,Seafood Gratin

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An overhead shot of a rich and creamy Seafood Cassolette in a white ramekin, topped with golden-brown breadcrumbs and fresh parsley.
This elegant Seafood Cassolette is easier to make than you think!

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