If you’ve been searching for a comforting, hearty meal that feels like a warm hug on a plate, this Chicken Pot Pie Casserole Recipe is exactly what you need. Imagine tender shredded chicken nestled in a creamy, flavorful vegetable sauce with hints of thyme and garlic, all topped with a golden blanket of fluffy mashed potatoes. It’s a one-dish wonder that combines all the cozy familiarity of a classic chicken pot pie with the ease of a casserole, making it perfect for busy weeknights or relaxed weekend dinners that delight every taste bud and bring smiles all around the table.

Ingredients You’ll Need
Simple ingredients are the true stars here. Each one plays a crucial role in delivering the rich flavor, creamy texture, and beautiful color that make this dish irresistible. You’ll find everything you need is fresh, pantry-friendly, and easy to source, which means no complicated shopping lists – just delicious results.
- 3 cups cooked chicken, shredded: The hearty protein base that makes this dish filling and comforting.
- 1 cup frozen peas and carrots: Adds vibrant color and a sweet, fresh crunch that balances the creamy sauce.
- 1 cup corn kernels: Brings a subtle sweetness and delightful texture contrast.
- 1/2 cup onion, diced: Provides a savory depth and aromatic foundation for the sauce.
- 1/4 cup flour: Essential for thickening the sauce to that perfect creamy consistency.
- 1 1/2 cups chicken broth: Adds savory flavor and keeps the filling moist and luscious.
- 1 cup milk: Creates a silky, smooth sauce that ties all the ingredients together.
- 1 teaspoon thyme: Infuses a fragrant herbal note that complements the chicken beautifully.
- 1 teaspoon garlic powder: Adds warmth and depth to the seasoning without overpowering.
- Salt and pepper to taste: The basic seasoning essentials that bring everything into delicious balance.
- 2 cups mashed potatoes (for topping): This golden, fluffy cap seals in the goodness and adds a satisfying texture contrast.
How to Make Chicken Pot Pie Casserole Recipe
Step 1: Preparing the Base
Start by preheating your oven to 375°F (190°C) – this ensures it’s hot and ready to give your casserole that beautiful golden finish. While the oven warms up, sauté your diced onions in a large saucepan for a few minutes until they become soft and fragrant, setting the stage for the rich sauce.
Step 2: Thickening the Sauce
Next, sprinkle the flour over your softened onions, stirring it in as you go, and cook for about a minute. This step cooks out the raw flour taste and begins the thickening process. Slowly pour in the chicken broth and milk, whisking constantly to prevent lumps and to create a smooth, velvety sauce base.
Step 3: Adding the Veggies and Seasoning
Now stir in the peas, carrots, and corn kernels – frozen veggies make this step a breeze without sacrificing freshness. Add thyme, garlic powder, salt, and pepper, mixing everything well until the sauce thickens delightfully and the flavors meld together.
Step 4: Assembling the Casserole
Transfer that luscious chicken and vegetable mixture into a greased baking dish to prevent sticking. Then, gently spread your creamy mashed potatoes evenly over the top, creating a smooth and inviting layer that will brown beautifully in the oven.
Step 5: Baking to Perfection
Place your casserole in the oven and bake for 25 to 30 minutes until the top is gloriously golden brown and the filling bubbles up slightly around the edges. This finishing touch creates the perfect crispy yet creamy contrast.
How to Serve Chicken Pot Pie Casserole Recipe

Garnishes
A sprinkle of fresh parsley or chives adds a burst of color that makes this dish pop on the plate. For a touch of extra richness, a small dollop of sour cream on the side brightens the flavors delightfully.
Side Dishes
Since this casserole is hearty on its own, light and crisp sides work best. A simple green salad tossed with lemon vinaigrette or steamed green beans with a hint of garlic perfectly complement the creamy, cozy main course.
Creative Ways to Present
Serving the Chicken Pot Pie Casserole Recipe in individual ramekins turns it into an elegant single-serve delight for dinner parties. Alternatively, topping each portion with a sprinkle of shredded cheese before baking adds a melty, indulgent twist everyone will love.
Make Ahead and Storage
Storing Leftovers
Once cooled, cover the casserole tightly with foil or plastic wrap and refrigerate for up to three days. This allows the flavors to deepen overnight, making leftovers even more satisfying.
Freezing
If you want to enjoy this Chicken Pot Pie Casserole Recipe later, freeze it unbaked with the mashed potato topping covered tightly in an airtight container or foil. It’s best eaten within 1 to 2 months for optimal freshness.
Reheating
To reheat, thaw overnight in the fridge if frozen, then bake in a 350°F oven until warmed through and the topping is crisp again about 20-25 minutes. For quicker meals, microwave individual servings but expect the topping to be less crispy.
FAQs
Can I use fresh vegetables instead of frozen?
Absolutely! Just be sure to dice them small and steam or sauté beforehand to ensure they cook fully in the casserole.
Is this recipe suitable for using leftover chicken?
Yes, this is a fantastic way to use leftover roasted or boiled chicken. Just shred it well, and you’re ready to go.
Can I substitute the mashed potato topping?
You sure can! Some people love using biscuit dough or puff pastry for a more traditional pot pie experience, but mashed potatoes keep it quick and cozy.
How can I make this recipe gluten-free?
Simply swap the flour for a gluten-free flour blend or cornstarch to thicken the sauce, and be sure your broth and other ingredients are gluten-free.
What’s the best way to make the topping crispy?
Brushing the mashed potatoes with a little melted butter or sprinkling a bit of cheese on top before baking will give you a beautiful crispy crust.
Final Thoughts
This Chicken Pot Pie Casserole Recipe is genuinely one of my all-time favorites for bringing comfort and ease together in one delicious dish. Whether you’re feeding a hungry family or craving some cozy solo comfort food, this casserole never disappoints. Don’t wait to give it a try—you’ll find yourself coming back to it again and again, enjoying every creamy, savory, golden-baked bite.
Print
Chicken Pot Pie Casserole Recipe
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Total Time: 45 minutes
- Yield: 6 servings 1x
- Category: Casserole
- Method: Baking
- Cuisine: American
Description
This comforting Chicken Pot Pie Casserole combines tender shredded chicken, mixed vegetables, and a creamy sauce, all topped with a golden mashed potato crust. It’s a hearty, easy-to-make dish perfect for family dinners or cozy nights in.
Ingredients
Filling
- 3 cups cooked chicken, shredded
- 1 cup frozen peas and carrots
- 1 cup corn kernels
- 1/2 cup onion, diced
- 1/4 cup flour
- 1 1/2 cups chicken broth
- 1 cup milk
- 1 teaspoon thyme
- 1 teaspoon garlic powder
- Salt and pepper to taste
Topping
- 2 cups mashed potatoes
Instructions
- Preheat the oven: Preheat your oven to 375°F (190°C) to prepare for baking the casserole.
- Sauté the onions: In a large saucepan over medium heat, sauté the diced onions for 2-3 minutes until they become soft and translucent.
- Make the sauce: Stir in the flour with the onions and cook for about one minute to eliminate the raw flour taste. Slowly pour in the chicken broth and milk while stirring constantly to prevent lumps, creating a smooth sauce.
- Add vegetables and seasoning: Mix in the frozen peas and carrots, corn kernels, thyme, garlic powder, salt, and pepper. Continue stirring until the mixture thickens to a creamy consistency.
- Assemble the casserole: Transfer the chicken and vegetable filling into a greased baking dish. Evenly spread the mashed potatoes on top, smoothing them into a consistent layer.
- Bake: Place the dish in the preheated oven and bake for 25-30 minutes, or until the mashed potato topping turns golden brown and the filling is bubbly.
- Serve: Remove from the oven, let it cool slightly, then serve warm and enjoy your hearty chicken pot pie casserole.
Notes
- You can use leftover cooked chicken or rotisserie chicken for convenience.
- For extra flavor, add a tablespoon of butter when sautéing onions.
- The mashed potato topping can be seasoned with cheese or herbs for variety.
- Ensure the filling is thick enough before transferring to avoid a watery casserole.
- Leftovers can be stored in the refrigerator for up to 3 days and reheated in the oven.