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.

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 |

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

Seafood Cassolette: A Rich & Creamy French Classic
Ingredients
Equipment
Method
- 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.
- 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.
- 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.
- 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.
- 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
Notes
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.
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