Easy Chicken Pot Pie Casserole

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This Easy Chicken Pot Pie Casserole is the definition of comfort food made simple. Picture golden, buttery puff pastry crowning a bubbling creamy filling of tender chicken, vibrant peas, sweet carrots, and potatoes—all seasoned just right. It delivers the warmth and coziness of a classic pot pie but streamlined into a casserole form that’s ideal for family dinners or casual gatherings.

What makes this casserole stand out is how effortlessly it comes together. Thanks to ready-made puff pastry and rotisserie chicken, most of the heavy lifting is done for you. The result is a rustic, heartwarming dish with just the right balance of flaky crunch and velvety richness.

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What Kind of Puff Pastry Should I Use?

For this casserole, you want a puff pastry that rises well and bakes to a crisp, golden finish. Store-bought frozen puff pastry sheets work beautifully here. Just make sure to thaw them in the refrigerator beforehand to maintain pliability without becoming too sticky. Look for all-butter varieties for a richer flavor.

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Ingredients for the Easy Chicken Pot Pie Casserole

Cooked Chicken: This is the star of the casserole. Rotisserie chicken makes it even easier, but any leftover cooked chicken works.

Mixed Vegetables: Peas, carrots, and corn are classic, though you can swap in green beans or even diced bell peppers if preferred.

Potatoes: Diced and tender, they help thicken the filling and add a rustic texture.

Cream of Chicken Soup: A convenient shortcut that adds creamy body and deep chicken flavor.

Milk: Helps thin the soup slightly for a pourable consistency.

Seasonings: Salt, pepper, garlic powder, and thyme give the filling a comforting, savory depth.

Puff Pastry: Laid over the top, it turns golden and flaky during baking, creating that signature pot pie crust.

Egg Wash: Brushed on top of the pastry for an appealing golden-brown finish.

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How To Make the Easy Chicken Pot Pie Casserole

Step 1: Preheat and Prepare

Preheat your oven to 400°F (200°C). Lightly grease a 9×13-inch baking dish or casserole pan. Set out your thawed puff pastry to let it come to a workable temperature.

Step 2: Mix the Filling

In a large bowl, combine cooked chicken, diced cooked potatoes, mixed vegetables, cream of chicken soup, milk, and seasonings. Stir until everything is evenly coated and well distributed.

Step 3: Fill the Dish

Pour the chicken and vegetable mixture into your prepared baking dish, spreading it evenly with a spatula.

Step 4: Top with Puff Pastry

Gently lay the puff pastry sheet over the filling. If needed, roll it out slightly to cover the surface. Use a sharp knife to make a few small slits in the pastry for steam to escape.

Step 5: Brush and Bake

Brush the pastry with a beaten egg to give it a glossy, golden finish. Bake in the preheated oven for 25–30 minutes, or until the pastry is puffed and deeply golden brown.

Step 6: Cool and Serve

Allow the casserole to cool for 5–10 minutes before serving. This helps the filling set slightly and makes it easier to scoop.

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Serving and Storing Easy Chicken Pot Pie Casserole

This casserole is best served warm straight from the oven when the puff pastry is still golden and crisp. It pairs beautifully with a side salad or simple steamed greens to balance the richness. A spoonful of cranberry sauce on the side adds a touch of tart contrast.

To store leftovers, cover the casserole dish tightly with foil or transfer portions to an airtight container. It will keep in the refrigerator for up to 3 days. To reheat, bake at 350°F until warmed through, covering loosely with foil to prevent over-browning.

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Frequently Asked Questions

Can I use canned vegetables?

Yes, you can use canned vegetables. Just be sure to drain them well to avoid a watery filling.

Can I freeze this casserole?

Absolutely. Assemble the casserole without baking, wrap it tightly, and freeze for up to 2 months. Bake from frozen at 375°F, adding about 15 minutes to the cooking time.

How do I make it vegetarian?

Skip the chicken and use cream of mushroom soup instead of chicken soup. Bulk up the veggies with chickpeas or white beans.

Can I add cheese?

Yes, shredded cheddar or mozzarella can be mixed into the filling for a cheesy twist.

What can I use instead of puff pastry?

Pie crust or biscuit dough are great alternatives, though they yield different textures. Puff pastry gives the lightest, flakiest topping.

Why is my puff pastry soggy?

Make sure the filling isn’t too watery and that the pastry is fully baked. Slitting the top for steam release also helps prevent sogginess.

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Want More Casserole Ideas?

You might also like the Cheesy Broccoli Rice Casserole, a creamy bake with a cheesy kick. Or try the Sloppy Joe Casserole if you’re craving a savory twist on a childhood favorite.

For something with a Southern flair, check out the Pepperoni Pizza Casserole — it’s hearty and nostalgic. If you want to explore more layered comfort food, the Best Baked Cream Cheese Spaghetti might hit the mark.

And don’t miss the Easy Seafood Casserole for a coast-inspired option that still feels right at home in the comfort food category.

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If you make it, I’d love to hear how it turned out. Did you add cheese? Did you swap in a different veggie mix? Leave a comment below. I’m always curious how others bake it.

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