Costco Chicken Pot Pie Copycat Recipe

That Costco chicken pot pie is the one rotisserie chicken dish people genuinely miss when they can’t get to the store. This version gets you the same deep, creamy filling and thick, golden crust at home, on a weeknight, with one pot and a sheet of store-bought pastry.

It feeds a crowd and takes about an hour start to finish. If you’ve got leftover rotisserie chicken sitting in the fridge, tonight is the night.

Why I Love This Recipe

The filling is thick enough to hold its shape when you spoon it out, not soupy, because of a proper roux made with butter and flour before any liquid goes in.

The vegetables stay a little firm. A full 30-minute cook would turn them to mush, so the timing here keeps them with some bite.

This is the version I keep coming back to when I need something filling without a lot of fuss.

Recipe Ingredients

• 3 cups cooked chicken, shredded – Rotisserie chicken works best; a Costco bird gives you exactly the right amount
• 1 cup frozen peas – No need to thaw; they cook through in the filling
• 1 cup diced carrots – Cut to roughly 1/2-inch pieces so they cook evenly
• 1 cup diced celery – Adds a faint bitterness that balances the rich sauce
• 1 cup diced yellow onion – Yellow onion melts into the sauce better than white
• 3 cloves garlic, minced – Fresh is worth it here
• 4 tbsp unsalted butter – Salted works too; just hold back on any added salt until you taste
• 1/3 cup all-purpose flour – This is what thickens the filling; don’t skip it
• 2 cups chicken broth – Low-sodium gives you more control over the final saltiness
• 1 cup whole milk – Adds creaminess without making the sauce too heavy; half-and-half works too
• 1 tsp salt – Adjust at the end after tasting
• 1/2 tsp black pepper – Freshly ground if you have it
• 1/2 tsp dried thyme – The herb that makes it taste like a proper pot pie
• 1/4 tsp garlic powder – Rounds out the garlic flavor in the background
• 2 sheets refrigerated pie crust – One for the base, one for the lid; a standard 14.1 oz two-crust package fits a 9-inch pie dish
• 1 egg – For the egg wash that gives the crust its shine and color

Variations / Substitutions

• Turkey instead of chicken – Use the same 3 cups shredded; great after Thanksgiving when you have leftovers.
• Dairy-free – Swap the butter for olive oil and the whole milk for full-fat oat milk; the sauce will be slightly less rich but still thick.
• Add potatoes – Stir in 1 cup of diced, peeled Yukon Gold potato with the carrots; it makes the filling even heartier.
• Extra heat – Add 1/4 tsp cayenne pepper with the thyme and it warms the whole dish without making it spicy.
• Gluten-free – Replace the all-purpose flour with a 1:1 gluten-free flour blend and use gluten-free pie crust; the sauce thickens the same way.
• Fresh herbs – Use 1 tbsp fresh thyme leaves instead of dried; add them after the heat is off so the flavor stays bright.

If you like this kind of comforting baked dish, you might also enjoy a Chicken and Biscuit Casserole.

How To Make Chicken Pot Pie

Step 1: Soften the Vegetables

Heat your oven to 425°F (220°C). Melt the 4 tbsp unsalted butter in a large oven-safe skillet or heavy pot over medium heat. Add the 1 cup diced onion, 1 cup diced carrots, and 1 cup diced celery. Cook for about 6 minutes, stirring occasionally, until the onion is translucent and the carrots have started to soften at the edges.

Add the 3 cloves minced garlic and stir for about 1 minute, just until you can smell it. The vegetables won’t be fully cooked yet, which is intentional.

Step 2: Build the Sauce

Sprinkle the 1/3 cup all-purpose flour over the vegetables and stir steadily for 2 minutes over medium heat. The mixture will look dry and a little pasty. Pour in the 2 cups chicken broth gradually, stirring as you go, then add the 1 cup whole milk. Keep stirring until the sauce comes to a gentle simmer and thickens, about 5 minutes.

The sauce should coat the back of a spoon. If you drag your finger across the spoon and the line holds, you’re at the right consistency.

Step 3: Stir In the Filling

Reduce the heat to low. Add the 3 cups shredded chicken, 1 cup frozen peas, 1 tsp salt, 1/2 tsp black pepper, 1/2 tsp dried thyme, and 1/4 tsp garlic powder. Stir everything together and let it sit on low heat for 2 minutes so the peas warm through and the seasoning distributes.

Taste here and adjust the salt if needed. The filling should taste well-seasoned on its own, because the pastry adds no salt to the interior.

Step 4: Line the Dish with Pastry

Remove the filling from the heat and let it cool for 5 minutes. Unroll 1 sheet of refrigerated pie crust and press it into a 9-inch pie dish, letting the edges hang over the rim slightly. Pour the filling into the crust in an even layer.

Don’t skip the short cooling period. Pouring scalding filling onto raw pastry can make the bottom crust soggy before the dish even goes into the oven.

Step 5: Top and Glaze the Pie

Unroll the second sheet of pie crust and lay it over the filling. Press the top and bottom edges together, then fold them under and crimp with your fingers or a fork to seal. Cut 4 small slits in the center of the top crust with a knife to let steam escape. Beat the 1 egg with 1 tsp water and brush the mixture evenly over the top crust.

Step 6: Bake and Serve

Bake at 425°F (220°C) for 30 to 35 minutes, until the crust is deep golden brown and you can see the filling bubbling up around the slits. If the edges start browning too fast after about 20 minutes, cover them loosely with a strip of foil. Let the pie rest for 10 minutes out of the oven, then cut a generous wedge, plate it, and serve with the flaky layers cracked open on top.

Recipe Tips

• Use cold filling, not hot. If you have time, letting the filling cool to room temperature before it goes into the crust keeps the bottom from steaming and turning soft.
• Rotisserie chicken shortcut. An average Costco rotisserie chicken yields about 4 to 5 cups of shredded meat, so you’ll have some left over for a salad or soup the next day.
• Check your pie dish size. A shallow 9-inch dish works well. A deep-dish pie plate will hold the filling but may need an extra 5 to 8 minutes in the oven for the crust to color fully.
• Crimping for a good seal. A proper sealed edge keeps the filling from bubbling out the sides. Press firmly all the way around before baking.

Bake times by pan (all at 425°F / 220°C):

Pan Type	Depth	Bake Time
Standard 9-inch glass	Shallow	30 to 33 mins
Ceramic 9-inch	Standard	32 to 35 mins
Deep-dish 9-inch	Deep	35 to 40 mins

How To Store

• Refrigerate – Cover the dish tightly with plastic wrap or foil and refrigerate for up to 4 days. Individual slices store well in an airtight container.
• Reheating – Reheat slices in a 350°F (175°C) oven for 15 to 20 minutes until the filling is hot and the crust crisps back up. Microwaving works but softens the crust.

What To Serve With Chicken Pot Pie

A simple green salad with a sharp vinaigrette cuts through the richness of the filling, giving you some acid and crunch between bites. Roasted green beans with a squeeze of lemon do the same job if you’d rather keep it warm. For a bigger spread, a light tomato soup alongside makes the pot pie feel like a full diner-style meal without one dish competing with the other.

Frequently Asked Questions

Can I make the filling ahead of time?

Yes. The filling keeps in the fridge for up to 2 days. Let it cool completely first, then store it in an airtight container and assemble the pie just before baking.

Can I freeze the whole pie before baking?

You can freeze it unbaked for up to 2 months. Wrap the assembled, uncooked pie tightly in plastic wrap and then foil, and bake from frozen at 425°F (220°C) for 55 to 65 minutes, covering the edges with foil for the first 30 minutes.

My filling came out thin. What went wrong?

The flour likely didn’t cook long enough with the butter, or the broth was added too fast. A full 2 minutes of stirring the flour over heat before adding liquid is what activates the thickening.

Can I use a store-bought frozen pie crust instead of refrigerated?

Yes. Thaw it in the fridge overnight before using. Frozen crusts tend to be slightly thinner, so watch the edges after the 20-minute mark and tent with foil if they color quickly.

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