Chicken and leek pot pie pairs tender chicken and sweet, mild leeks in a creamy, savory sauce beneath crisp puff pastry. This practical version uses cooked chicken, so the filling comes together on the stovetop before baking until bubbling and golden.
Ingredients
- 1 sheet frozen puff pastry, about 8 oz (225 g), thawed according to package directions but kept cold
- 3 tablespoons unsalted butter (42 g)
- 2 medium leeks (about 12 oz / 340 g before trimming), white and light green parts only
- 2 medium carrots, peeled and diced (about 1 cup / 130 g)
- 2 garlic cloves, minced (about 2 teaspoons / 6 g)
- ⅓ cup all-purpose flour (43 g)
- 2 cups low-sodium chicken broth (480 ml)
- ¾ cup whole milk (180 ml)
- ½ teaspoon dried thyme (about 0.5 g)
- ½ teaspoon fine salt (3 g), plus more to taste
- ¼ teaspoon black pepper (about 0.5 g), plus more to taste
- 3 cups cooked chicken, cut into bite-size pieces (about 420 g)
- 1 cup frozen peas (140 g)
- 1 large egg (about 50 g), beaten with 1 tablespoon water (15 ml), for egg wash
Instructions
- Heat the oven and prepare the leeks. Set a rack in the middle of the oven and heat it to 400°F (200°C). Slice the leeks lengthwise and rinse well between the layers to remove grit, then slice them crosswise into half-moons. Pat them dry. Keep the puff pastry chilled until you are ready to use it.
- Cook the vegetables. Melt the butter in a large skillet or saucepan over medium heat. Add the leeks and carrots and cook for 7–9 minutes, stirring often, until softened but not browned. Add the garlic and thyme and stir for 30 seconds.
- Make the sauce. Sprinkle the flour over the vegetables and stir for 1 minute to coat them. Gradually whisk in the broth, followed by the milk, scraping the bottom of the pan as you go. Bring the mixture to a gentle simmer and cook for 3–5 minutes, stirring, until thick enough to coat a spoon.
- Add chicken and peas. Stir in the cooked chicken and frozen peas. Simmer gently for 2 minutes, then season with salt and pepper. If the filling looks very thick, loosen it with a splash of broth; it should be creamy but not runny. Remove the pan from the heat. If using leftover chicken, it should have been refrigerated promptly and kept cold before adding.
- Fill the baking dish. Spoon the mixture into a 9-inch (23 cm) deep pie dish or a similar 2-quart (1.9 L) baking dish. Let it stand for about 5 minutes so it is not piping hot when the pastry goes on. This brief pause helps keep the pastry from softening too quickly.
- Top with pastry. Unfold the cold pastry on a lightly floured surface and roll it just enough to cover the dish, if needed. Lay it over the filling and trim the edges, leaving a small overhang. Press the pastry against the dish rim to seal, then cut 3 or 4 small vents in the center. Brush the top with the beaten egg and water. Place the dish on a rimmed baking sheet in case the filling bubbles over.
- Bake and rest. Bake for 25–30 minutes, until the pastry is deeply golden and the filling is bubbling at the vents. If the pastry browns too quickly, loosely cover it with foil for the remaining bake. If using any chicken that was not fully cooked beforehand, the center of the chicken pieces must reach the USDA FSIS safe minimum internal temperature of 165°F (74°C), checked with a food thermometer; this recipe is designed for already-cooked chicken. Let the pie rest for 10 minutes before serving so the sauce settles.
Tips
- Wash leeks carefully: dirt often hides between their layers. Trim off the tough dark-green tops; save them for stock if you like.
- Keep puff pastry cold but pliable. If it gets warm and sticky while you work, return it to the refrigerator for 10 minutes before topping the pie.
- For a smoother sauce, add the broth gradually while whisking. A thin filling can make the bottom of the pastry soggy, so simmer the sauce until it coats a spoon before adding the chicken.
- Store-bought cooked chicken, including plain rotisserie chicken, is convenient. Remove skin and bones, and avoid adding heavily seasoned pieces that could make the filling too salty.
Serving Suggestions
Serve the pie warm, giving each person a portion of pastry and plenty of filling. A crisp green salad with a simple vinaigrette balances the creamy sauce, while steamed green beans, roasted broccoli, or lightly dressed cabbage make easy vegetable sides. Because the pie contains chicken, vegetables, and pastry, a small side is usually enough.
Variations
For a more herb-forward filling, replace the dried thyme with 1 tablespoon (about 3 g) chopped fresh thyme or add 1 tablespoon (about 4 g) chopped parsley just before filling the dish. You can also replace the carrots with diced celery, or use a cup of sliced mushrooms in place of the peas; cook mushrooms with the leeks until their released liquid evaporates.
For a richer sauce, swap the milk for an equal amount of half-and-half (180 ml). For a lighter, less rich filling, use 2% milk. If puff pastry is unavailable, a refrigerated pie crust can cover the top, though it will bake up more like a conventional pie crust than flaky pastry. Check its package instructions for any adjustment to baking time.
Storage and Reheating
Refrigerate leftovers within 2 hours of baking, covered or in an airtight container. They keep for 3–4 days in the refrigerator. For longer storage, freeze portions in airtight, freezer-safe containers for up to 2 months; the pastry may lose some crispness after thawing. Thaw frozen portions overnight in the refrigerator.
Reheat individual portions in a 350°F (175°C) oven for about 20–25 minutes, loosely covered with foil if the pastry is already well browned. Reheat larger portions in an oven-safe dish until hot throughout. Leftovers should reach 165°F (74°C) when checked with a food thermometer. A microwave works for quick portions, but it will soften the pastry; heat in short intervals and check the center.
Frequently Asked Questions
Can I make chicken and leek pot pie ahead?
Yes. Make the filling up to 2 days ahead, cool it promptly, and refrigerate it in a covered container. Transfer it to the baking dish and add the pastry just before baking. If the filling is cold, allow extra baking time and check that it is bubbling hot throughout.
Can I use raw chicken?
This recipe is written for cooked chicken. To use raw chicken, first cook it separately in a skillet until every piece reaches 165°F (74°C), measured with a food thermometer, then add it to the sauce. Do not rely on the pastry’s color or baking time to determine poultry safety.
Why is my pastry soggy underneath?
The filling may have been too thin, too hot, or placed under pastry that had warmed up. Thicken the sauce until it coats a spoon, let the filling stand briefly before topping, and work with cold pastry. Baking on a preheated metal sheet can also help the bottom of the dish heat evenly.
Can I assemble the whole pie in advance?
It is best to keep the filling and pastry separate until baking, since pastry sitting on moist filling can soften. If you assemble it ahead, cover and refrigerate it promptly and bake within a day; add extra time if it goes into the oven cold.
Can I freeze the pie before baking?
You can freeze the filling separately and thaw it in the refrigerator before assembling. Freezing a fully assembled pie may make the pastry less flaky. If you do freeze it assembled, use a freezer-to-oven-safe dish, follow the pastry package guidance, and bake until the filling is bubbling and the chicken is hot throughout.
What can I use instead of leeks?
Use about 2 cups (300 g) sliced yellow onion or a mix of onion and sliced scallions. The flavor will be sharper and less delicate than the mild sweetness of leeks, so cook the onion gently until soft before adding the flour.
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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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