Creamy Shrimp Casserole Recipe Seafood
There is something undeniably satisfying about pulling a bubbling, golden-topped casserole from the oven. The aroma fills the kitchen, promising a meal that is both generous and deeply comforting. This Creamy Shrimp Casserole is exactly that. It’s a dish that feels elegant enough for a special occasion but is straightforward enough for a weeknight dinner when you fancy something a little bit special. The combination of succulent prawns enveloped in a rich, savoury sauce made with white wine, garlic, and cream, all hiding under a crisp, cheesy breadcrumb topping, is just sensational.
This recipe has become a firm favourite in my house. It delivers that wonderful, hearty satisfaction we all crave from a baked dish, but with the lighter, more refined touch of seafood. It’s the kind of meal that brings everyone to the table, and the clean plates at the end speak for themselves. This is my go-to recipe when I need something that comes together relatively quickly but still feels impressive and thoughtfully made. It’s ideal for those evenings when you want to unwind with a truly delicious meal without spending hours in the kitchen.
We’re using king prawns here, which bring a lovely sweetness that works so well with the savoury sauce. The hint of lemon cuts through the richness, while fresh parsley adds a burst of freshness. It’s a beautifully balanced seafood casserole that I’m certain you’ll be adding to your regular recipe rotation. It’s great for anyone who appreciates a good seafood dish and wants a reliable recipe for a baked shrimp dinner that never fails to get compliments.
Recipe Overview
This Creamy Shrimp Casserole Recipe Seafood is all about tender prawns in a luscious, flavour-packed cream sauce, baked until golden and bubbly. The flavour is rich and savoury from the cheese and cream, but balanced with bright notes of lemon and a hint of sharpness from Dijon mustard. The panko topping provides a wonderful textural contrast. I used to struggle with seafood casseroles becoming watery, but I discovered that patting the prawns completely dry before adding them to the sauce is the secret to a perfect consistency every time.
- Prep Time: 15 minutes
- Cook Time: 20 minutes
- Total Time: 35 minutes
- Servings: 4 people
- Difficulty: Easy
Why You’ll Love This Creamy Shrimp Casserole Recipe Seafood
- Genuine Flavour: The sauce is a refined blend of double cream, dry white wine, and garlic, creating a velvety coating that enhances the sweet, delicate flavour of the prawns without overpowering them. The Gruyère cheese adds a fantastic nutty depth.
- Ready in Under 40 Minutes: From start to finish, this entire baked shrimp dish is on the table in about 35 minutes, making it a brilliant option for a sophisticated yet speedy evening meal.
- Flexible Recipe: This shrimp casserole recipe is wonderfully adaptable. You can swap the Gruyère for a sharp cheddar or even a bit of smoked mozzarella. For extra greens, try wilting a large handful of fresh spinach into the sauce before adding the prawns.
- Great for a Relaxed Dinner Party: It works beautifully when you have guests and want to serve something that feels a bit luxurious without being complicated. You can even prepare the sauce in advance to make things even smoother.
- Family Tested: My family absolutely adores this seafood casserole. The combination of creamy sauce and cheesy topping is always a winner, and it feels like a real treat of a dinner.
Ingredients You’ll Need
For a dish like this, using good quality ingredients really pays off. I find that using a proper block of Parmigiano-Reggiano and grating it myself provides a much better flavour and melt than pre-shredded options. The same goes for the prawns; seek out large, juicy ones for the best result.
- 500g raw king prawns, peeled and deveined
- 40g unsalted butter
- 2 large shallots, finely chopped
- 3 cloves of garlic, minced
- 2 tbsp plain flour
- 100ml dry white wine (a Sauvignon Blanc or Pinot Grigio works well)
- 250ml double cream
- 150ml chicken or vegetable stock
- 1 tsp Dijon mustard
- 1 lemon, zest and juice
- 3 tbsp fresh parsley, finely chopped, plus extra for garnish
- Salt and freshly ground black pepper, to taste
- For the Topping:
- 75g Gruyère cheese, grated
- 50g Parmesan cheese, freshly grated
- 50g panko breadcrumbs
Adam’s Tip: If you can get them, fresh raw prawns are ideal, but good quality frozen ones are a fantastic substitute. Just make sure to thaw them completely in the fridge and, most importantly, pat them thoroughly dry with kitchen paper before they go into the sauce. This prevents a watery casserole.
How to Make This Creamy Shrimp Casserole Recipe Seafood
The process for this baked shrimp dish is quite straightforward. We’ll make a classic creamy sauce, fold in the prawns, top it all with a cheesy crumb, and bake until it’s irresistibly golden and bubbling.
- First, preheat your oven to 180°C (160°C fan) and lightly grease a 2-litre ovenproof casserole dish.
- In a large, heavy-based pan or sauté pan, melt the butter over a medium heat. Add the chopped shallots and cook gently for 3-4 minutes until they have softened and become translucent, but not browned.
- Stir in the minced garlic and cook for another minute until you can smell its wonderful aroma. Be careful not to let it burn.
- Sprinkle over the plain flour and stir continuously for 1-2 minutes. This cooks out the raw flour taste and creates a ‘roux’, which will thicken our sauce.
- Gradually pour in the white wine, whisking as you go to prevent lumps. Let it bubble away for a minute to cook off the alcohol and reduce slightly.
- Slowly add the stock, followed by the double cream, whisking constantly until the sauce is completely smooth. Bring the mixture to a gentle simmer and let it cook for 3-5 minutes, stirring occasionally, until it has thickened enough to coat the back of a spoon.
- Remove the pan from the heat. Stir in the Dijon mustard, the zest and juice of the lemon, most of the chopped parsley, and half of the grated Parmesan. What works best for me is tasting the sauce at this stage and seasoning generously with salt and black pepper. It should be rich and full of flavour.
- Gently fold the dry, raw prawns into the creamy sauce, ensuring they are all evenly coated. Pour this mixture into your prepared casserole dish and spread it out evenly.
- In a small separate bowl, combine the grated Gruyère, the remaining Parmesan, and the panko breadcrumbs. Sprinkle this mixture evenly over the surface of the casserole.
- Bake in the preheated oven for 15-20 minutes. You’ll know it’s ready when the sauce is gently bubbling at the edges and the topping is crisp and a beautiful golden brown.
- Allow the casserole to rest for 5 minutes before serving. This lets the sauce settle slightly. Garnish with a final sprinkle of fresh parsley and serve hot.
Tips From My Kitchen
- Temperature Control: Once your sauce comes to a simmer, reduce the heat to medium-low. Boiling double cream too vigorously can sometimes cause it to separate or ‘split’. A gentle simmer is all you need to thicken it perfectly.
- The Secret Step: I learned that to get the most succulent prawns, it’s essential not to overcook them. They only need a short time in the oven. The prawns are done when they are pink and opaque. This is why we use raw prawns; if you were to use pre-cooked ones, they would become tough and rubbery in the oven.
- Make-Ahead: You can prepare the cream sauce (up to step 7) up to a day in advance. Let it cool completely and store it in an airtight container in the fridge. When you’re ready to eat, gently reheat the sauce in a pan, then fold in the raw prawns, assemble the casserole, and bake as directed.
- Storage: Leftovers can be stored in an airtight container in the refrigerator for up to two days. To reheat, place it in an oven-safe dish, cover with foil, and warm through at 160°C for about 15 minutes, or until hot.
Common Mistakes to Avoid
- Not Drying the Prawns: As I mentioned, this is a critical step. Any excess water on the prawns will release into the sauce as it bakes, resulting in a thin, watery consistency. Take the extra minute to pat them completely dry with kitchen paper. Properly prepping seafood is key to a great dish.
- Overbaking the Casserole: Prawns cook very quickly. Leaving the casserole in the oven for too long is the surest way to get tough, chewy seafood. Keep a close eye on it; as soon as the topping is golden and the edges are bubbling, it’s ready.
- Skipping the Rest Time: It’s tempting to dive straight in, but letting the casserole stand for 5 minutes after it comes out of the oven is important. It allows the molten sauce to cool just enough to set slightly, making it creamier and easier to serve without it running all over the plate.
Delicious Variations to Try
Once you’ve mastered the base recipe, it’s fun to experiment. This creamy casserole is a fantastic canvas for other flavours and ingredients.
- Add a Little Heat: For a gentle warmth that complements the seafood beautifully, add 1/2 teaspoon of red pepper flakes into the pan along with the garlic.
- Add Some Veg: Wilted spinach, sautéed leeks, or a handful of frozen peas stirred into the sauce before baking adds extra nutrition and flavour. Sautéed mushrooms would also be a delicious addition.
- Different Seafood: This recipe works wonderfully as a mixed seafood casserole. Try a combination of prawns, scallops, and chunks of a firm white fish like cod or haddock. If you are a fan of pasta, this creamy sauce is also fantastic in recipes like Creamy Garlic Penne Pasta.
What to Serve With This Creamy Shrimp Casserole
This rich and satisfying dish pairs best with simple sides that can soak up or cut through the creamy sauce.
- Crusty Bread: A warm, crusty baguette or some homemade garlic bread is essential for mopping up every last delicious drop of the sauce.
- A Fresh Green Salad: A simple salad with a sharp vinaigrette offers a lovely, fresh contrast. This Classic House Salad with Red Wine Vinaigrette is an excellent choice.
- Steamed Vegetables: A side of steamed asparagus spears or tenderstem broccoli provides a nice bit of green and a contrasting texture.
- Wine Pairing: A crisp, dry white wine like the one used in the recipe (Sauvignon Blanc or Pinot Grigio) is the ideal partner, as its acidity will cut through the richness of the cream.
Frequently Asked Questions

Creamy Shrimp Casserole
Ingredients
Method
- First, preheat your oven to 180°C (160°C fan) and lightly grease a 2-litre ovenproof casserole dish.
- In a large, heavy-based pan or sauté pan, melt the butter over a medium heat. Add the chopped shallots and cook gently for 3-4 minutes until they have softened and become translucent, but not browned.
- Stir in the minced garlic and cook for another minute until you can smell its wonderful aroma. Be careful not to let it burn.
- Sprinkle over the plain flour and stir continuously for 1-2 minutes. This cooks out the raw flour taste and creates a 'roux', which will thicken our sauce.
- Gradually pour in the white wine, whisking as you go to prevent lumps. Let it bubble away for a minute to cook off the alcohol and reduce slightly.
- Slowly add the stock, followed by the double cream, whisking constantly until the sauce is completely smooth. Bring the mixture to a gentle simmer and let it cook for 3-5 minutes, stirring occasionally, until it has thickened enough to coat the back of a spoon.
- Remove the pan from the heat. Stir in the Dijon mustard, the zest and juice of the lemon, most of the chopped parsley, and half of the grated Parmesan. What works best for me is tasting the sauce at this stage and seasoning generously with salt and black pepper. It should be rich and full of flavour.
- Gently fold the dry, raw prawns into the creamy sauce, ensuring they are all evenly coated. Pour this mixture into your prepared casserole dish and spread it out evenly.
- In a small separate bowl, combine the grated Gruyère, the remaining Parmesan, and the panko breadcrumbs. Sprinkle this mixture evenly over the surface of the casserole.
- Bake in the preheated oven for 15-20 minutes. You'll know it's ready when the sauce is gently bubbling at the edges and the topping is crisp and a beautiful golden brown.
- Allow the casserole to rest for 5 minutes before serving. This lets the sauce settle slightly. Garnish with a final sprinkle of fresh parsley and serve hot.
Notes
I really hope you enjoy making this creamy shrimp and prawn casserole. It’s a dish filled with wonderful flavours and textures, and it always feels like a special treat. If you give it a try, I would love to hear how it went for you. Please feel free to leave a comment and a rating below!
Happy cooking,
Adam
