Smoked Haddock & Gruyere Pasta Bake
Smoked haddock and Gruyere pasta bake is creamy, comforting, and packed with rich, savoury flavour. Flaky smoked haddock is folded through tender pasta with a silky cheese sauce, Dijon mustard, and plenty of nutty Gruyere before being baked until bubbling and golden. The smoky fish and deeply flavoured cheese work beautifully together, making this an easy but properly satisfying dinner for cooler evenings.
Smoked Haddock Pasta Bake
Smoked haddock and gruyere pasta bake is one of those dishes I turn to when I want something a little indulgent and very comforting. The smoked fish adds a savoury depth that works beautifully with the nutty richness of gruyere, all stirred through tender pasta and baked until bubbling and golden. It’s creamy, full of flavour, and perfect for cold nights or feeding a hungry crowd. I always make extra – the leftovers are somehow even better the next day.
Ingredients
- 350g smoked haddock
- 200g conchiglie pasta
- 30g salted butter
- 30g plain flour
- 500ml milk
- 1/2 onion, skin removed
- 3 cloves garlic
- 1 bay leaf
- 1/2 tsp dijon mustard
- 100g gruyere cheese, grated
- Nutmeg
- Salt and Pepper
Instructions
- Preheat oven to 180°C (conventional).
- Place the haddock fillets onto a lightly greased sheet of foil. Fold the foil over to create a parcel, fully enclosing the fish. Transfer to the oven and bake for 15-18 minutes, or until cooked through. Remove from the oven and set aside to cool.
- While the fish bakes, cook the pasta according to packet instructions minus 2 minutes. Drain and set aside.
- In a small pot, heat the milk together with the onion, garlic cloves, and bay leaf over low heat for 15-20 minutes to infuse.
- Once cool enough to handle, use a fork to break up the haddock into flakes, discarding any skin.
- In a larger pot, melt the butter over medium heat until sizzling. Add the flour and stir through until well combined. Cook for 1-2 minutes, or until the roux has turned a light golden colour.
- Strain the infused milk into the roux, discarding the onion, garlic, and bay leaf. Stir continuously for 5 minutes, or until the sauce is thick and creamy.
- Add the Dijon mustard and 50g of the Gruyere. Season with nutmeg, salt, and pepper to taste. Stir until the cheese has melted and the sauce is smooth.
- Stir through the flaked fish and cooked pasta until well combined.
- Transfer to an ovenproof dish and sprinkle with the remaining 50g of Gruyere.
- Bake for 15-20 minutes, or until the cheese is golden and bubbling.
Notes
- This is a proper British-style pasta bake that's deeply comforting and full of smoky, savoury flavour. The infused bechamel is what elevates it well above a standard cheese sauce.
- Baking the haddock in a foil parcel steams the fish gently and keeps it moist. It also makes flaking it much easier once it's cool.
- Smoked haddock has a pronounced, distinctive flavour that carries beautifully through the creamy bechamel. Undyed smoked haddock is worth seeking out if you can find it. It has a cleaner flavour without the artificial yellow colouring.
- Infusing the milk with onion, garlic, and bay leaf before making the bechamel adds a depth of flavour that you simply can't get by adding cold milk straight to the roux. Don't skip this step.
- Conchiglie (shell pasta) is ideal for pasta bakes as the shells trap the sauce inside, giving you a pocket of creamy sauce in every bite.
- Undercooking the pasta by 2 minutes before baking is essential. It will finish cooking in the oven, and overcooked pasta in a bake goes mushy and unpleasant.
- Nutmeg is a classic addition to bechamel. Be subtle with it. You want a background warmth, not an overpowering spice flavour.
- Gruyere melts beautifully and has a nutty, slightly sweet flavour that pairs brilliantly with smoked fish. Don't substitute with a milder cheese as the flavour won't be the same.
- Leftovers can be stored in an airtight container in the fridge for up to 2 days. Reheat in the oven at 180°C for 15-20 minutes, or until heated through and the cheese is golden again.
- Not suitable for freezing as the bechamel can split and the pasta becomes mushy after defrosting.
What I Cook With
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Nutrition Information:
Yield:
4Amount Per Serving: Calories: 532Total Fat: 18.7gSaturated Fat: 10.3gCholesterol: 122mgSodium: 867mgCarbohydrates: 52.1gFiber: 1.5gSugar: 6.5gProtein: 38.5g
Serve this with
- Serve with Buttery Grilled Green Beans for something fresh alongside the creamy pasta bake. Their lightly charred edges and buttery flavour work beautifully with the smoked haddock and nutty Gruyère.
- Pair with roasted broccolini with lemon and black pepper for a sharper, greener side. The citrus cuts through the rich cheese sauce while the broccoli adds a little bite and bitterness.
- Add my Garlic Bread for full comfort-food mode. The crisp, buttery bread is perfect for scooping up the creamy sauce and works especially well with the smoky haddock and melted Gruyère.
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From Paris with Love (and Cheese)
The idea for this smoked haddock & gruyere pasta bake came to me while flicking through one of my absolute favourite cookbooks, The Little Paris Kitchen by Rachel Khoo. I’ve loved this book for years, and while I wasn’t looking for anything specific, I stumbled across her recipe for Gratin au Poisson Fumé and instantly knew it was going to be dinner. Now, her recipe is more of a smoky potato bake, but I had a strong feeling it would translate beautifully into a pasta dish. And let me tell you – it really did. A few tweaks here and there, a change of ingredients, and suddenly I had the richest, most comforting pasta bake I’ve made in a long while.
This isn’t just any pasta bake. It’s creamy, indulgent, salty from the smoked fish, sharp and nutty from the gruyere, and exactly what you need on a cold winter night. It’s what I like to call my French comfort food with an Aussie practicality twist. I know smoked haddock can be a bit divisive, but here it becomes something quite magical. The flavours mellow out in the cream sauce and pair so well with the cheese that even the most hesitant fish eater might be convinced to dive in.
I didn’t grow up loving creamy fish pastas. My mum used to make salmon mornay with soy milk and tinned fish, and unbeknownst to us all at the time, I was allergic to soy and suspicious of anything in a can. So it put me off the whole concept for years. But then, on a city break to Paris, I tried the most incredible creamy salmon fettuccine in a cosy bistro and it totally changed my mind. This pasta bake channels that moment. It’s nostalgic, a little posh, and completely delicious.
The Comfort Food We All Deserve
There’s something about a pasta bake that just feels like a warm hug, isn’t there? Especially one with creamy sauce, stringy melted cheese, and those crispy golden bits around the edge of the dish that you fight someone for. I love how adaptable pasta bakes are, and this one ticks every box – it’s hearty, flavour-packed, and a little bit fancy without being fussy. The smoked haddock adds a rich depth that makes the whole thing feel like a dish you’d order at a French bistro, while the gruyere adds just the right amount of decadence.
If you’ve got memories of gloopy tinned fish casseroles that haunt your childhood (hi, it’s me), this dish is the antidote. Everything is elevated by using fresh ingredients and paying attention to balance. The creaminess is cut with a little sharpness from the cheese, and the smokiness of the haddock doesn’t overpower the dish – it just sits quietly in the background, doing all the right things.
Honestly, this is the kind of meal I’d serve if I had friends over in the middle of July, huddled around the table with wine and thick socks. It’s the pasta version of putting on your comfiest jumper and not leaving the house all weekend. And we all need a bit of that sometimes.
A French Classic Gets the Bry Treatment
What I love about taking inspiration from other cuisines is that I get to honour a recipe while still making it suit my tastes and what I have on hand. Rachel Khoo’s gratin was so elegant and classic, but I’m not going to pretend I always have the right potatoes in the cupboard. What I do always have is pasta. So naturally, I went where my heart led me. Plus, pasta is faster, and we all know I like to keep things low-effort with high reward.
The smoked haddock & gruyere pasta bake is a dish that feels celebratory but achievable. I didn’t want to overcomplicate it, so it’s more about letting the ingredients speak for themselves than doing anything too cheffy. The haddock is poached gently, flaked into the sauce, and then stirred through the pasta. And the sauce – oh, the sauce. It’s velvety and rich without being too heavy, with just the right amount of gruyere melted through to give you that glorious, cheese-pull situation when you serve it up.
I know we’re all a bit tired, and sometimes dinner feels like another job, but trust me on this one. This dish will reward you tenfold. Leftovers reheat beautifully, though you might want to add a little splash of cream or milk to loosen it up. And if you don’t have gruyere, a good vintage cheddar or even comté will do just fine. Make it yours.
Frequently asked questions
Why infuse the milk before making the béchamel? Adding cold, plain milk straight to the roux gives you a sauce that tastes purely of cream and flour. Infusing the milk with onion, garlic, and bay leaf for fifteen to twenty minutes before it goes anywhere near the roux builds a layer of aromatic depth into the sauce that carries through the entire bake. It’s an extra step that takes almost no active effort and makes a significant difference to the finished dish.
Why undyed smoked haddock? The yellow colouring in dyed smoked haddock is artificial and adds nothing to the flavour. Undyed smoked haddock has a cleaner, more natural smoky flavour without the slightly chemical edge that artificial colouring can bring. It’s worth seeking out at a fishmonger or the fresh fish counter of a well-stocked supermarket.
Why cook the pasta two minutes less than the packet says? Because it finishes cooking in the oven during the final fifteen to twenty minute bake, and pasta that goes in already fully cooked will be soft and mushy by the time the cheese is golden. Undercooking by two minutes gives you pasta that is perfectly al dente in the finished bake rather than something that has gone past the point of no return.
Ingredient breakdown
Smoked haddock
Baked in a sealed foil parcel before anything else happens, which steams the fish gently and keeps it moist rather than drying it out in the open oven. Once cool enough to handle it flakes apart easily with a fork, the skin gets discarded, and the flaked fish goes into the sauce at the end. Smoked haddock has a pronounced, distinctly smoky and savoury flavour that carries beautifully through the creamy béchamel. Undyed is worth seeking out if you can find it.
Conchiglie pasta
Shell-shaped pasta that is specifically well suited to a bake like this because the hollow shells trap the creamy sauce inside, giving you a pocket of béchamel in every bite rather than just sauce coating the outside. Cooked two minutes less than the packet instructions before going into the baking dish, where it finishes cooking in the oven.
Salted butter and plain flour
Combined over medium heat to form the roux that is the structural base of the béchamel. Cook until it turns a light golden colour before the infused milk goes in, which eliminates the raw flour taste and adds a subtle nuttiness to the finished sauce.
Milk
Infused with the onion half, garlic cloves, and bay leaf over low heat for fifteen to twenty minutes before it goes anywhere near the roux. This step transforms plain milk into an aromatic, deeply flavoured liquid that becomes the backbone of the béchamel. Strain it before adding it to the roux, discarding the onion, garlic, and bay leaf.
Onion, garlic, and bay leaf
Not ingredients in the finished dish but in the infused milk that becomes the béchamel. The onion goes in halved with the skin removed, the garlic cloves go in whole, and the bay leaf sits with them over low heat for fifteen to twenty minutes before being strained out. Together they add a layered aromatic depth to the sauce that plain milk alone would never produce.
Dijon mustard
Stirred into the sauce with the first batch of Gruyere, adding a subtle tang and depth that lifts the richness of the béchamel and complements the smokiness of the haddock. The same quiet but essential role it plays in every cheese sauce in this collection.
Gruyere
Used in two stages. Half goes into the sauce to melt and become part of the béchamel, adding a nutty, slightly sweet flavour and helping the sauce thicken to the right coating consistency. The other half goes over the top of the assembled bake and melts into a golden, bubbling crust in the oven. Gruyere is the right cheese here because it melts cleanly, has a complex flavour, and pairs particularly well with smoked fish. Don’t substitute with a milder cheese because the flavour won’t be the same.
Nutmeg
A classic béchamel addition, grated directly into the sauce in a small amount. You want a background warmth rather than anything distinctly nutmeg-flavoured. Grate it fresh if you can and be subtle with it.
Salt and pepper
Season the sauce after the cheese has melted in, tasting carefully because the smoked haddock and Gruyere both bring significant saltiness. Adjust from there.
