🧁 Introduction

Scallop and Prawn Gratin Casseroles are a luxurious seafood dish that feels straight out of a fine-dining restaurant. Tender scallops and juicy prawns are nestled in a rich, creamy sauce, topped with melted cheese, and baked until golden and bubbling. Perfect for special occasions, romantic dinners, or when you want to impress guests, these individual casseroles combine comfort and elegance in every bite.

📝 Ingredients

8 large sea scallops
12 large prawns, peeled and deveined
Salt and black pepper, to taste
1 tablespoon olive oil
1 tablespoon butter

For the Creamy Sauce

2 tablespoons butter
2 cloves garlic, minced
1 cup heavy cream
½ cup grated Gruyère or mozzarella cheese
¼ cup grated Parmesan cheese
1 teaspoon Dijon mustard
1 teaspoon fresh thyme leaves (or dried thyme)

Optional Add-ins

½ cup sautéed mushrooms or shallots
Breadcrumbs for extra crunch

👩‍🍳 Instructions

Preheat the Oven
Preheat oven to 400°F (200°C). Lightly butter individual ramekins or small casserole dishes.
Season the Seafood
Pat scallops and prawns dry. Season lightly with salt and pepper.
Sear the Seafood
Heat olive oil and butter in a skillet over medium-high heat.
Sear scallops for 1–2 minutes per side until lightly golden.
Add prawns and cook for 1 minute per side. Remove and set aside.
Make the Creamy Sauce
In the same skillet, melt butter and sauté garlic for 30 seconds.
Add cream, Dijon mustard, and thyme. Simmer gently for 3–4 minutes.
Stir in half of the cheeses until smooth.
Assemble the Casseroles
Divide scallops and prawns among the ramekins.
Spoon the creamy sauce over the seafood.
Sprinkle with remaining cheese (and breadcrumbs if using).
Bake
Bake uncovered for 12–15 minutes, until bubbly and lightly browned on top.
Serve
Let rest for a few minutes before serving. Garnish with extra thyme if desired.

❓ Frequently Asked Questions (FAQ)

Can I use frozen seafood?
Yes, just thaw completely and pat dry before cooking.

What cheese works best for gratin?
Gruyère is classic, but mozzarella, Swiss, or a blend works beautifully.

Can I prepare this ahead of time?
Yes. Assemble up to 8 hours ahead, cover, and refrigerate. Bake just before serving.

What should I serve with this dish?
Crusty bread, rice, or a light green salad pairs perfectly.

⭐ Final Thoughts

Scallop and Prawn Gratin Casseroles are the ultimate indulgence for seafood lovers. Creamy, cheesy, and perfectly balanced with tender shellfish, this dish is both comforting and refined. Whether served as a main course or an impressive starter, it’s guaranteed to leave a lasting impression.