Creating the Gourmet Seafood Cassolette is straightforward if you follow these simple steps:

1. Preheat your oven to 375°F (190°C) and prepare a large cassolette dish or individual ramekins.
2. Sauté the Onions and Garlic: In a skillet, heat olive oil over medium heat. Add the chopped onion and cook until translucent. Stir in the minced garlic and sauté for an additional minute.
3. Prepare the Seafood: Add the shrimp, scallops, and white fish to the skillet. Season with salt, pepper, and dill. Cook for about 3-5 minutes, just until the seafood is opaque. Remove from heat.
4. Make the Sauce: In a separate saucepan, combine the heavy cream and seafood stock. Heat gently until warmed through, then stir in lemon juice.
5. Combine: Pour the cream mixture over the seafood in the skillet. Mix well until everything is coated.
6. Transfer to Cassolette: Pour the seafood mixture into the prepared cassolette dish or individual ramekins.
7. Top with Cheese and Breadcrumbs: Sprinkle the grated Gruyère cheese evenly over the top, followed by the breadcrumbs.
8. Bake: Place the cassolette in the oven and bake for 30-40 minutes, or until the topping is golden brown and crispy.
9. Cool Slightly: Allow the dish to cool for about 10 minutes before serving. This ensures the flavors settle and it’s easier to serve.
10. Garnish: Just before serving, sprinkle fresh parsley over the top for an added touch of color and flavor.

With these steps, the Gourmet Seafood Cassolette will come together beautifully.