Seafood Made Simple: Haddock is wonderful in puff pastry — try this recipe
Smoked haddock and leek pastries by Aishling Moore. Picture: Chani Anderson
Haddock, a round fish and a close cousin of cod is a member of the gadidae family which also includes coley, whiting and pollock.
Smoked haddock and leek pastries
Smoked haddock is an excellent seafood option when you’re trying to keep costs down and feed a whole family.
Servings
12Preparation Time
10 minsCooking Time
35 minsTotal Time
45 minsCourse
MainIngredients
2 x 320g sheets puff pastry
1 egg, beaten
1 tsp mustard seeds
1 tsp sea salt flakes
For the filling
100g butter
1 small leek, finely sliced
2 cloves garlic, minced
600ml milk
150g natural smoked haddock, diced into chunks
50g flour
1 tbsp whole grain mustard
1 tsp Dijon mustard
Method
In a small heavy-based pot, cook the leek and garlic in 50g of the butter. Season and cook on medium-low heat until softened (about 4-5 minutes). Remove from the heat and set aside.
In another heavy-based medium-sized pot, place the milk and smoked haddock.
Warm on medium-low heat to gently poach the fish – approximately 2-3 minutes once the milk warms.
Remove the fish from the milk with a slotted spoon and place on a plate. Reserve the milk and keep warm.
In a separate medium-sized pot, melt the remaining butter on a medium-low heat.
Add the flour and mix to combine using a wooden spoon.
Cook until sandy in colour. Once the mixture is coming away from the sides of the pot slowly begin to add the warmed milk.
Add 100ml at a time, mixing all the time with each addition to prevent lumps from forming.
Once all the milk is added, cook for a further 2 minutes.
Add the Dijon and wholegrain mustard and remove from the heat.
Fold through the smoked haddock and leeks.
Season to taste with freshly cracked black pepper and sea salt. Allow to cool completely.
Preheat oven to 200°C/gas 6. To form the pastries, cut each sheet of puff pastry into 12 even squares (8.5 x 8mm) this will give you 24 squares in total.
Brush 12 of the squares with beaten egg and place a heaped teaspoon of the mixture in the centre of each.
Place a square of puff pastry over each and press down to seal the four sides of the squares with a fork.
Using a very sharp knife, lightly score the pastry.
Once sealed, brush each pastry with egg wash and sprinkle with sea salt and mustard seeds.
Bake on a lined baking tray for 15 minutes.
Cool on a wire rack for at least 5 minutes before eating.
It’s essential to add the milk whilst warm to the butter and flour mixture to prevent lumps from forming.
Be sure to check for bones when dicing the smoked haddock. These will run down along the centre of the fillet.
The smoked haddock and leek filling must be completely cooled before placing in the pastry. I recommend making the filling a day ahead and storing in the fridge before assembling within the pastry.
Scoring the pastry is essential to prevent the filling from bursting out of the sides when
baking.
These pastries freeze well, so stick a few in the freezer before baking and cook from frozen for best results.
I love the addition of mustard with smoked haddock but feel free to omit it and add lots of fresh herbs and lemon zest if you’d prefer.

