Delia Smith Chicken and Leek Pie, Made at Home

Delia Smith chicken and leek pie is a British-style pie with tender chicken and softened leeks in a creamy sauce beneath crisp, golden pastry. This practical home version follows that familiar combination, using cooked chicken and ready-rolled puff pastry for a comforting supper without a complicated pastry-making step.

Ingredients

1 sheet ready-rolled puff pastry, about 10 oz (280 g), thawed if frozen
1 lb 5 oz boneless, skinless chicken thighs, about 600 g
2 medium leeks, about 12 oz (340 g) trimmed weight
2 tbsp (28 g) unsalted butter
1 tbsp (15 ml) vegetable oil
⅓ cup (45 g) plain all-purpose flour
1½ cups (360 ml) chicken stock, preferably lower-sodium
¾ cup (180 ml) whole milk
½ tsp (2.5 ml) Dijon mustard
½ tsp dried thyme, or 1 tsp (1 g) fresh thyme leaves
½ tsp fine salt, plus more as needed
¼ tsp black pepper
1 large egg (about 50 g), beaten with 1 tsp (5 ml) water, for glazing

Instructions

Heat the oven to 400°F (200°C). Set a baking sheet on the middle rack to heat; placing the pie dish on it helps the bottom cook evenly. Take the pastry out of the refrigerator while you prepare the filling, keeping it cool and pliable.
Trim the root ends and dark green tops from the leeks. Slice the white and pale green parts into thin rounds, then rinse thoroughly in a bowl of cold water, separating the layers to remove grit. Lift the leek slices out of the water and drain well.
Cut the chicken into roughly 1-inch (2.5 cm) pieces and season with a little of the salt and pepper. Heat the oil in a large frying pan over medium-high heat. Brown the chicken in batches for about 4 minutes per batch, turning so the outside is no longer pink; it will finish cooking in the sauce. Transfer to a plate. Avoid overcrowding, which makes the chicken steam rather than brown.
Reduce the heat to medium. Add the butter and leeks to the pan and cook for 7–9 minutes, stirring often, until softened but not browned. Sprinkle over the flour and stir for 1 minute. Gradually pour in the stock, stirring and scraping up any browned bits, then add the milk, mustard, thyme, remaining salt and pepper.
Bring the sauce to a gentle simmer, stirring continuously, and cook for 3–5 minutes until smooth and thick enough to coat a spoon. Return the chicken and any juices to the pan. Simmer gently for 8–12 minutes, stirring occasionally, until the thickest chicken pieces reach 165°F (74°C) on a food thermometer; this is the USDA FSIS safe minimum internal temperature for poultry. Taste the filling and adjust the seasoning. Take it off the heat and let it cool for about 10 minutes so the pastry is less likely to soften on contact.
Spoon the filling into a 9-inch (23 cm) deep pie dish, roughly 1½ quarts (1.4 litres). Unroll the pastry over the dish. Trim excess pastry, leaving about ¾ inch (2 cm) overhang, then press it onto the rim to seal. Cut a small slit in the middle to let steam escape. Brush the top with beaten egg, avoiding drips down the sides, which can prevent the pastry from rising.
Set the pie dish on the hot baking sheet and bake for 25–30 minutes, until the pastry is puffed and deep golden and the filling is bubbling at the steam vent. If the top browns too quickly, loosely cover it with foil. Rest the pie for 10 minutes before serving; the sauce will settle and be easier to spoon.

Tips

Wash leeks after slicing, not just before: soil often hides between their layers. Drain them well so extra water does not thin the sauce.
Use a thermometer to check the chicken rather than relying on color. If the sauce is too thick before the chicken is cooked, add stock a tablespoon at a time; if it is thin, simmer it a little longer before adding the pastry.
For a shortcut, use 3 cups (about 420 g) cooked, shredded chicken. Make the leek sauce as directed, then stir in the chicken and heat until the filling reaches 165°F (74°C). Do not leave the filling to cool for longer than needed.
Keep puff pastry cold until assembly and avoid stretching it over the dish. If the filling is made ahead, refrigerate it promptly and assemble the pie just before baking for a crisper top.

Serving Suggestions

Serve the pie hot with buttered peas, green beans, or simply steamed broccoli to balance the creamy filling. A crisp green salad with a sharp vinaigrette is another good contrast. For a heartier plate, add boiled or mashed potatoes, though the pastry makes the pie substantial on its own.

Variations

Replace up to half the chicken with sliced mushrooms, browning them after the chicken and before cooking the leeks. For a richer filling, substitute half-and-half for the milk, but simmer gently because a higher-fat sauce can feel heavier. If fresh thyme is unavailable, use dried thyme as listed; a small pinch of dried tarragon is another suitable herb, with a more pronounced anise-like flavor. Shortcrust pastry can replace puff pastry for a firmer, less flaky lid; follow the pastry package’s baking guidance if it differs.

Storage and Reheating

Refrigerate leftover pie within 2 hours of baking, covered or in an airtight container. Keep it refrigerated at 40°F (4°C) or below and use within 3–4 days. For best pastry texture, reheat portions in a 350°F (175°C) oven until piping hot throughout; check that the center reaches 165°F (74°C), the safe temperature for reheated leftovers. A microwave is quicker but softens the pastry, so heat in short bursts and check the center. Freeze baked portions, well wrapped, for up to 2 months for best quality; thaw in the refrigerator before reheating to 165°F (74°C). Avoid reheating the same portion more than once.

Frequently Asked Questions

Can I make chicken and leek pie ahead?
Yes. Make the filling, cool it promptly, and refrigerate it in a covered container for up to 1 day. Assemble with cold pastry shortly before baking. If baking the pie straight from the refrigerator, allow extra time and check that the center is bubbling and hot.

Can I use chicken breast instead of thighs?
Yes. Cut breast meat into even pieces and watch it closely, since it can dry out more quickly. Cook it until a thermometer reads 165°F (74°C), then stop simmering; thighs are more forgiving and usually stay juicier.

Why is my pie filling watery?
Leeks may carry rinse water into the pan, or the sauce may not have simmered long enough to thicken. Drain the leeks well and cook the flour with the butter for a full minute. Before assembling, simmer a thin filling uncovered until it coats a spoon.

Can I assemble the pie and freeze it unbaked?
For more reliable pastry, freeze the filling separately and add fresh or thawed pastry after the filling has thawed in the refrigerator. If freezing an assembled pie, wrap it securely and bake from frozen only if your pastry instructions allow; the center must reach 165°F (74°C), and the longer baking can overbrown the top.

What dish should I use?
A 9-inch (23 cm) deep pie dish with a capacity of about 1½ quarts (1.4 litres) suits this quantity. A similarly sized ovenproof dish works too, but a shallow dish may need less baking time, so check the pastry and filling early.

How do I stop the pastry lid going soggy?
Let the filling cool for about 10 minutes before topping the pie, use a fully preheated oven, and bake the dish on a hot sheet. Cut a steam vent, and keep the filling thick rather than adding extra stock at the last moment.

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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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