Chicken and Leek Pie

Chicken and leek pie is a classic British savoury pie: tender chicken and sweet, softened leeks in a creamy white sauce, finished under a crisp puff pastry lid. The combination works because the leeks mellow as they cook, giving the filling sweetness and depth, while Dijon mustard and thyme keep the richness from feeling flat. Boneless chicken thighs suit the slow simmer particularly well, staying juicy in the sauce. Serve it as a comforting dinner with greens, peas or mash, and let it rest briefly so the filling settles beneath the golden pastry.
Cuisine style British comfort food
Flavor profile Creamy • Savoury • Herby
Techniques Sautéing • Simmering • Baking
Key equipment Oven • Saucepan • Baking dish
Cooking style Make-ahead friendly • Crowd-friendly

Why this recipe works

  • Gentle savoury depth: Softened leeks, chicken stock, Dijon mustard and thyme give the filling rounded flavour without making it heavy or sharp.
  • Smooth, rich sauce: Flour thickens the stock before the cream is added, helping the sauce stay glossy and spoon-coating.
  • Crisp pastry contrast: Cooling the filling briefly before topping helps the puff pastry bake up flaky rather than steaming from underneath.

Get the most out of this recipe

Timing notes

  • Cool the filling before topping: Letting the filling stand briefly before adding the pastry reduces steam and helps protect the flaky texture.
  • Rest before serving: A short rest after baking allows the sauce to settle, so the pie slices and spoons more neatly.

Ingredient notes

  • Clean the leeks well: Leeks often hold grit between their layers, so rinse them thoroughly before cooking.
  • Choose good puff pastry: All-butter puff pastry gives the best flavour and a more delicate, crisp finish.
  • Use mustard for balance: Dijon mustard cuts through the creaminess; whole-grain mustard gives a milder, more textured result.

Make-ahead tips

  • Make the filling ahead: The chicken and leek filling can be cooked in advance, cooled completely and refrigerated before topping with pastry and baking.
  • Reheat for crisp pastry: Reheat leftovers in a 180°C (355°F) oven until piping hot so the pastry has a chance to crisp again.
  • Freezer-friendly: Cool the baked pie completely, wrap well and thaw overnight in the fridge before reheating.

Common mistakes

  • Browning the leeks: Cook the leeks gently until soft, not coloured; browning can make the sauce taste too sweet and distract from the creamy filling.
  • Adding stock too quickly: Whisk the stock in gradually so the flour disperses evenly and the sauce stays smooth.
  • Sauce too thick too soon: If the sauce tightens before the chicken is cooked through, loosen it with a little more stock and keep the simmer gentle.

Equipment you'll need

Ingredients

Filling

Topping

Instructions
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  1. Heat the oven to 200°C (390°F). Cut the chicken into bite-size pieces, then season with the salt and pepper.
  2. Melt the butter in a saucepan over medium heat. Add the leeks and cook for 8 to 10 minutes, stirring, until softened but not browned.
  3. Add the chicken and cook for 5 to 6 minutes, stirring, until the outside turns opaque. Sprinkle over the flour and cook for 1 minute, stirring well so it coats everything.
  4. Gradually whisk in the chicken stock until smooth, then add the Dijon mustard and thyme. Simmer gently for 10 to 12 minutes, stirring occasionally, until the chicken is cooked through and the sauce is thick enough to coat a spoon.
  5. Turn the heat to low and stir in the double cream. Cook for 2 minutes to warm through, then taste and adjust with a little more salt and pepper if needed.
  6. Tip the filling into a baking dish and let it cool for 10 minutes so the pastry stays flaky. Lay the puff pastry over the top, trim if needed, and crimp the edges to seal.
  7. Beat the egg and brush it over the pastry. Bake for 25 to 30 minutes until the pastry is deep golden and the filling is bubbling at the edges.
  8. Rest the pie for 10 minutes before serving so the sauce settles. Remove the thyme sprigs as you serve, if you like.

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Recipe notes

Tips

  • Wash the leeks thoroughly, especially between the layers, to avoid any grit in the sauce.
  • If the sauce thickens too much before the chicken is cooked, whisk in a splash more chicken stock and keep the simmer gentle.
  • For vulnerable groups, use pasteurised egg for the glaze if preferred.

Substitutions

  • Replace Dijon mustard with whole-grain mustard for a milder heat and a coarser texture.
  • Replace butter with extra-virgin olive oil for a slightly lighter filling.

Storage

  • Refrigerate up to 3 days
  • Cool completely, then cover and refrigerate. Reheat in a 180°C (355°F) oven until piping hot and the pastry is crisp again; if freezing, wrap well and thaw overnight in the fridge before reheating.

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Chicken and Leek Pie
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Recipe overview

  • Servings: 4 servings
  • Total time: 1h 25min (30min active)
  • Difficulty: Medium
  • Cuisine: British
  • Allergens:
    Gluten Milk Wheat
Freezer friendly Kid friendly

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