Chicken Pot Pie Casserole featuring a flaky puff pastry top and a rich, creamy chicken filling. The golden puff pastry bakes up quickly and eliminates the need for a bottom crust or blind baking.
Chicken Pot Pie Casserole Ingredients
The recipe has two parts: the creamy filling and the puff pastry crust. Below are the ingredients you’ll need for each.
Chicken Pot Pie Filling Ingredients
- Unsalted butter
- Onion: finely chopped so it melts into the sauce.
- Carrots: peeled and diced small so they cook through.
- Celery: diced.
- Kosher salt: divided between the vegetables and the sauce.
- Garlic: minced.
- All-purpose flour: the thickener that makes the filling spoonable.
- Chicken broth
- Whole milk
- Heavy cream
- Dry white wine: optional; can be replaced with more broth.
- Soy sauce: a small amount adds savory depth.
- Dried parsley
- Onion powder
- Black pepper
- Fresh thyme: or dried thyme.
- Shredded cooked chicken: rotisserie or leftover roast chicken works well.
- Frozen peas: stirred in at the end so they stay bright green.
Puff Pastry Crust Ingredients
- Puff pastry: thawed but still cold.
- Egg: beaten with a little water for the egg wash.
Full ingredient quantities and a printable recipe card are included in the recipe section below.
Variations and Substitutions
This casserole is flexible. Swap ingredients based on what you have or your dietary preferences.
- Biscuit topping: use drop biscuits instead of puff pastry for a different texture.
- Turkey: leftover roast turkey is a great substitute for chicken.
- Beef version: you can adapt the filling to use beef for a heartier stew-style pot pie.
- Slow cooker option: make the filling in a slow cooker and top with biscuits or pastry near the end.
- No wine: replace the wine with more broth and a splash of lemon for brightness.
- Extra vegetables: add frozen corn or green beans with the peas.
- Herbs: fresh sage or rosemary are good alternatives to thyme.
Tools You’ll Need
Standard kitchen tools are sufficient for this dish.
- Large pot or Dutch oven: for cooking the filling.
- 9×13 baking dish: or any similar 3-quart casserole dish.
- Rimmed baking sheet: to place the casserole on while baking and catch any spills.
- Rolling pin: to fit the pastry to your dish.
- Pastry brush: for applying the egg wash.
How to Make Chicken Pot Pie Casserole: An Easy Guide
The filling cooks on the stove in about 25 minutes. Preheat your oven to 400°F before you begin assembling.
Cook the Vegetables
Melt the butter in a large pot over medium heat. Add the chopped onion, diced carrots and celery with 1 teaspoon of kosher salt. Cook, stirring occasionally, for 8 to 10 minutes until the vegetables are tender. Add the minced garlic and cook for another minute.
Build a Thick Sauce
Sprinkle the flour over the softened vegetables and cook for 2 minutes, stirring, to remove the raw flour taste. Gradually whisk in the chicken broth, then add the milk, heavy cream, wine (if using) and soy sauce. Stir to combine and bring the mixture to a gentle simmer.
Add the dried parsley, onion powder, black pepper, thyme and the remaining 1 1/2 teaspoons of kosher salt. Simmer for 4 to 6 minutes, until the sauce has thickened to a spoonable consistency — it should mound on a spoon rather than run off.
Stir In the Chicken and Peas
Fold the shredded cooked chicken and frozen peas into the hot sauce. Taste and adjust the seasonings as needed. Transfer the hot filling to a 9×13-inch baking dish so the underside of the pastry will start cooking as soon as it’s set on top.
Top with Puff Pastry and Bake
On a lightly floured surface, roll the puff pastry to fit the top of your casserole dish. Cover the filling with the pastry, trim any excess, cut a few vents to release steam, and brush the top with the beaten egg wash. Place the dish on a foil-lined rimmed baking sheet to catch any drips.
Bake for 30 to 35 minutes, until the pastry is deeply golden brown. If the top is browning too quickly, tent it loosely with foil and continue baking until the pastry and the underside are fully cooked. Allow the casserole to rest for 5 minutes before serving so the filling firms up slightly.
4 Common Mistakes to Avoid
Avoid these pitfalls to ensure a crisp, fully cooked crust and a well-textured filling:
- Rushing the flour cook: Cook the flour in the fat for the full 2 minutes to eliminate a raw, pasty taste.
- Cutting vegetables too large: Large pieces can remain undercooked and change the texture of the filling.
- Skipping steam vents: Without vents the pastry can puff unevenly and collapse into a soggy layer.
- Removing the casserole too soon: Wait until the pastry is deeply golden brown; pale pastry can be underbaked and doughy.
Make Ahead and Storage
The filling stores well on its own, which makes this an excellent make-ahead dinner option.
Storing Leftovers
- Cool first: Let the casserole sit at room temperature for about 30 minutes before covering.
- Cover loosely: Use foil to avoid softening the crust excessively.
- Refrigerate: Store leftovers in the fridge for 3 to 4 days.
Freezing
- Freeze the filling only: Cool the filling completely, then freeze for up to 3 months without the pastry.
- Thaw overnight: Move the filling to the fridge the day before you plan to bake it.
- Reheat before topping: Warm the filling on the stove so it goes into the dish hot and the pastry underside cooks properly.
Reheating Leftovers
- Oven: Reheat uncovered at 350°F for 15 to 20 minutes to crisp the crust.
- Air fryer: A single portion reheats nicely at 325°F for about 8 minutes.
- Microwave: Fast but softens the pastry; use only when short on time.
What to Serve with Chicken Pot Pie Casserole
The casserole is rich and comforting; pair it with something bright and green to balance the flavors.
Side Dish Ideas
- Sharp salads: a crisp green salad with a tangy vinaigrette cuts through the creaminess.
- Something pickled: a quick cucumber or vinegar-based salad adds acidity and freshness.
- Roasted or steamed greens: broccoli, green beans, or sautéed greens make a simple, healthy side.
- Roasted vegetables: roasted Brussels sprouts or root vegetables make a hearty accompaniment.
- Crunchy slaw: a light coleslaw brings crunch and acidity to the plate.
Tips for the Best Pot Pie Casserole
Small details yield a better result. Follow these tips for a flaky crust and a well-textured filling.
- Cook the roux fully: Flour needs time in the fat to lose its raw flavor and thicken properly.
- Add liquids slowly: Pour broth and milk in a thin stream while stirring to keep the sauce smooth.
- Use a touch of soy sauce: A tablespoon enhances savory depth without tasting like soy.
- Keep pastry cold: Cold butter layers steam during baking, creating lift and flakiness.
- Fill the dish hot: Hot filling helps cook the underside of the pastry more quickly and prevents sogginess.
- Prefer rotisserie chicken: It’s convenient and the dark meat helps keep the filling moist.
Frequently Asked Questions
Quick answers to the most common questions about this chicken pot pie casserole.
It’s the classic pot pie filling — tender chicken, vegetables and a creamy sauce — baked in a casserole dish under a single top crust. There’s no bottom pastry to blind bake, which saves time.
This version is a casserole because the filling bakes in a dish with only a top crust. The flavors are the same as a traditional pot pie but with less work.
Yes. Make the filling up to two days ahead and refrigerate it. Reheat on the stove until hot, then top with pastry and bake. Assembling with a cold filling can leave the pastry doughy underneath.
Freeze the filling without pastry for up to three months. Thaw overnight in the refrigerator and reheat before topping with fresh pastry and baking.
Reheat uncovered in a 350°F oven for 15 to 20 minutes to crisp the crust. A single portion reheats well in an air fryer at 325°F for about 8 minutes; microwaving is fastest but will soften the pastry.
A small amount of soy sauce boosts savory flavor through natural glutamates without imparting a soy taste. A splash of dry white wine can also add brightness and aroma.
Yes. Drop biscuit dough over the hot filling and bake until the biscuits are golden and fully cooked. The result is heartier and slightly more rustic.
A sharp, acidic or green side dish balances the rich filling. Consider a tangy salad, quick pickled vegetables, or simply steamed or roasted green vegetables.
Other Chicken Dinners You’ll Love
- Crock pot chicken pot pie with biscuit topping
- Chicken and dumpling soup
- Cheesy chicken, broccoli and rice casserole
- Crockpot chicken and noodles
- Chicken tater tot casserole
- Chicken potato casserole
Chicken Pot Pie Casserole with Puff Pastry (No Soggy Crust!)
Creamy chicken and vegetable filling baked beneath a flaky, golden sheet of puff pastry. No bottom crust to blind bake.
Prep Time: 25 minutes | Cook Time: 30 minutes | Total Time: 55 minutes | Servings: 8
Ingredients
Filling
- 4 tbsp unsalted butter
- 1 large onion, finely chopped
- 3 carrots, peeled and diced
- 2 celery stalks, diced
- 2 1/2 tsp kosher salt, divided
- 2 tsp minced garlic
- 1/3 cup all-purpose flour
- 2 cups chicken broth
- 1 cup whole milk
- 1/2 cup heavy cream
- 1/4 cup dry white wine (or additional chicken broth)
- 1 tbsp soy sauce
- 1 tsp dried parsley
- 1 tsp onion powder
- 1 tsp black pepper
- 1 tsp fresh thyme (or 1/2 tsp dried)
- 4 cups shredded cooked chicken (rotisserie is ideal)
- 1 cup frozen peas
Crust
- 1 sheet puff pastry, thawed but cold
- 1 egg beaten with 1 tbsp water for egg wash
Instructions
- Heat oven to 400°F.
- Cook the vegetables: Melt butter in a large pot over medium heat. Add onion, carrots and celery with 1 tsp kosher salt. Cook 8–10 minutes until softened, then add garlic and cook 1 minute.
- Build a thick sauce: Sprinkle flour over the vegetables and cook 2 minutes, stirring. Slowly stir in the broth, then the milk, cream, wine and soy sauce.
- Season and simmer: Add parsley, onion powder, black pepper, thyme and the remaining 1 1/2 tsp salt. Simmer 4–6 minutes until thick and spoonable.
- Stir in chicken and peas: Fold in shredded chicken and frozen peas, taste and adjust seasoning, then pour hot filling into a 9×13″ baking dish.
- Roll the pastry: Roll puff pastry on a lightly floured surface to fit the dish. Lay it on top, cut a few vents, and brush with egg wash.
- Bake: Place the casserole on a foil-lined baking sheet and bake 30–35 minutes until deeply golden. Tent with foil if the top browns too quickly. Rest 5 minutes before serving.
Notes
Simmer the filling until it mounds on a spoon; a thin filling will steam the pastry from below. Keep the puff pastry cold for best puff and flakiness. Make the filling up to two days ahead and reheat before topping and baking. Freeze filling (without pastry) up to three months.
Nutrition (per serving)
Calories: 478 kcal | Carbohydrates: 30 g | Protein: 28 g | Fat: 27 g | Saturated Fat: 11 g | Sodium: 1180 mg
