Comforting Chicken Pot Pie Casserole Recipe for Weeknights

Easy 🫛🥕🥔 Chicken Pot Pie Casserole with puff pastry is a comforting, effortless twist on classic pot pie that skips making a traditional crust. A single sheet of puff pastry bakes up golden, light and flaky, while the homemade filling is rich and creamy with generous pieces of chicken, carrots, peas, and potatoes. Use rotisserie chicken, leftover chicken, or holiday turkey to cut prep time.

Golden-brown puff pastry-topped chicken pot pie in a baking dish, partially served with filling of chicken and mixed vegetables, surrounded by two plated servings.

Easy Chicken Pot Pie Casserole

This dish takes the familiar flavors of chicken pot pie and turns them into a hearty casserole, perfect for feeding a crowd or family weeknight dinners.
A savory, herb-forward creamy sauce coats tender chicken, potatoes and classic pot pie vegetables like carrots, peas, green beans, and corn.
The sauce is made from scratch—no canned or condensed soup—so you control flavor and texture.
Instead of a pie crust, a sheet of puff pastry tops the casserole, saving time while delivering a flaky, buttery finish.
Leftover chicken or turkey works beautifully here, and a rotisserie chicken is a quick shortcut.

Golden-brown rectangular pie with a flaky crust, garnished with sprigs of herbs, in a white baking dish on a light countertop.

A serving of chicken pot pie with a golden, flaky crust on a white plate, showing mixed vegetables and creamy filling; a baking dish and another plate are in the background.

Key Ingredients in Chicken Pot Pie Casserole

Chicken or turkey: Boneless, skinless chicken thighs or breasts work well. Use 2 cups shredded or diced leftover chicken/turkey or a rotisserie bird to save time.
Potatoes: Yukon Golds are preferred for their waxy texture and ability to hold shape. Dice small so they cook through.
Herbs and aromatics: Onion, garlic, dried thyme, dried oregano, salt, pepper and optional chicken bouillon or poultry seasoning. Fresh rosemary or thyme can be added for extra aroma.
Butter and all-purpose flour: Form the roux that thickens the sauce.
Liquids: Reduced-sodium chicken broth and half-and-half (or heavy cream for a richer sauce).
Vegetables: Frozen mixed vegetables (carrots, corn, peas, green beans) make this quick and classic.
Puff pastry: Sold frozen; thaw until pliable but still cold so it puffs properly in the oven.
Egg: A beaten egg brushed over the pastry gives a glossy, golden finish.

Note: Ingredient amounts and full directions are in the recipe card below.

Top-down view of prepped ingredients for chicken pot pie, including chopped chicken, vegetables, broth, milk, seasonings, butter, egg, flour, and a sheet of pastry on a light surface.

A serving of chicken pot pie with golden, flaky crust and mixed vegetables on a white plate, beside a baking dish containing the remaining pie.

How To Make Chicken Pot Pie with Puff Pastry

Prepare chicken: If using raw chicken, heat olive oil in a large skillet and sear seasoned chicken over medium-high heat about 3 minutes; it will not be fully cooked. If using cooked chicken or turkey, skip this step and add it later with the vegetables.
Sauté root vegetables: Add diced onion, potatoes and butter to the skillet and cook 3–4 minutes until the onion softens; stir frequently. Small dice for the potatoes speeds cooking.
Add garlic: Stir in garlic and cook about 1 minute until fragrant.
Simmer: Pour in chicken broth, add thyme, oregano and bouillon or poultry seasoning. Bring to a simmer and cook 4–5 minutes, stirring occasionally.
Thicken: Sprinkle in flour, stir for a minute, then add half-and-half and the thawed mixed vegetables. Simmer about 3 minutes to thicken. Add previously cooked chicken or turkey at this stage if using.
Taste and season: Adjust salt, pepper and herbs to taste. Be mindful of salt if your broth or pre-cooked meat is already salted.
Assemble: Transfer the filling to a 9×13-inch or similar casserole dish. Unroll the thawed puff pastry, roll slightly if needed to fit with a bit of overhang, then place it over the casserole. Crimp edges with a fork and cut a few slits to vent steam.
Egg wash and bake: Brush the pastry with beaten egg and bake in a 375°F oven for about 25–28 minutes, or until the pastry is risen and golden. Rotate the dish halfway through baking for even color and watch closely so the pastry doesn’t burn.
Rest and serve: Let the casserole rest briefly before serving so the filling settles.

Note: Step-by-step photos and the printable recipe are below in the recipe card section.

5 from 3 votes

Chicken Pot Pie Casserole

A simple, satisfying pot pie made as a casserole with a flaky puff pastry top. The scratch-made creamy filling holds big pieces of chicken, potatoes and classic mixed vegetables. Use leftover poultry or a rotisserie chicken to make it even easier.

Prep Time: 30 minutes

Cook Time: 25 minutes

Servings: 6

Equipment

9×13-inch baking dish or similar casserole dish
Rolling pin (optional)

Ingredients

1 tablespoon olive oil
1 pound boneless skinless chicken thighs or breasts, diced (or 2 cups shredded leftover chicken, turkey, or rotisserie chicken)
1 teaspoon salt
1/2 teaspoon black pepper
1 cup yellow onion, diced
1 cup Yukon Gold potatoes, diced (about 1/2-inch)
2 garlic cloves, minced
2 tablespoons unsalted butter
2 cups reduced-sodium chicken broth
1 teaspoon dried thyme
1/2 teaspoon dried oregano
1/2 teaspoon chicken bouillon or poultry seasoning (optional)
1/4 cup all-purpose flour
3/4 cup half-and-half
2 cups frozen mixed vegetables, thawed
Salt and pepper to taste
1 sheet puff pastry, thawed but cold
1 large egg, beaten (for egg wash)

Instructions

Preheat oven to 375°F and spray the baking dish with cooking spray.
Heat olive oil in a large skillet. Add raw chicken, season with salt and pepper, and cook about 3 minutes until seared but not fully cooked. If using cooked chicken/turkey, skip this step and add it later.
Add diced onion, potatoes and butter to the skillet. Sauté 3–4 minutes until the onion starts to soften. Add garlic and cook 1 minute.
Pour in chicken broth, add thyme, oregano and bouillon (if using). Bring to a simmer and cook 4–5 minutes.
Sprinkle flour over the mixture and stir for 1 minute. Pour in half-and-half and add the thawed mixed vegetables. Stir and simmer about 3 minutes until sauce thickens. Add previously cooked poultry now if using.
Taste and adjust seasoning with salt, pepper and additional herbs as needed.
Transfer the filling to the prepared baking dish. Unroll the puff pastry on a lightly floured surface, roll to fit with slight overhang, then place it over the casserole. Crimp edges with a fork and cut several slits in the top to vent steam.
Brush the pastry with beaten egg and bake 25–28 minutes, or until the pastry is golden and puffed. Rotate halfway through baking and watch for browning.
Let the casserole rest briefly before serving.

Notes

Storage: Store leftovers airtight in the refrigerator up to five days or freeze up to three months. Puff pastry will lose its original crispness when refrigerated or frozen; reheat as needed.

Nutrition

Serving: 1 serving, Calories: 578 cal, Carbohydrates: 43 g, Protein: 30 g, Fat: 32 g, Saturated Fat: 11 g, Sodium: 710 mg.

Nutrition information is an approximation.

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