Creamy Chicken Pot Pie Casserole with Flaky Biscuit Topping

This chicken pot pie casserole delivers everything you love about the classic, without the fuss. A velvety, herb-scented filling loaded with chicken and tender vegetables bakes under a golden biscuit crust.

It all comes together in one dish, no rolling pin required, and tastes like a slow Sunday supper on a Tuesday night.

Why This Casserole Stays on Our Dinner Rotation

The filling is rich and creamy but never heavy. A little cream cheese stirred in at the end gives it body and a subtle tang that lifts the whole thing.

Using store-bought biscuits for the topping keeps it fast. They puff up buttery and crisp on top, while the bottoms soak in just enough of that savory sauce.

Ingredients

• 4 tbsp unsalted butter: for sautéing the vegetables and building the roux
• 1 cup diced yellow onion: about half a large onion
• 2 garlic cloves, minced
• 1 cup diced carrots: about 2 medium
• 1 cup diced celery: about 2 stalks
• 1/4 cup all-purpose flour: thickens the sauce
• 2 cups chicken broth: low-sodium
• 1 cup whole milk: makes the sauce creamy, 2% works too
• 4 oz cream cheese, softened: cut into cubes
• 3 cups cooked shredded chicken: a rotisserie chicken makes this step fast
• 1 cup frozen peas: no need to thaw
• 1/2 tsp salt, plus more to taste
• 1/4 tsp black pepper
• 1/2 tsp dried thyme
• 1 can (16.3 oz) refrigerated buttermilk biscuits: 8 count, I use the flaky layers kind

Variations / Substitutions

• Swap the protein: Cooked turkey, ham, or even sautéed mushrooms work beautifully.
• Make it dairy-free: Use plant butter, oat milk, and a dairy-free cream cheese alternative.
• Skip the cream cheese: The sauce will still be creamy; just add a splash more milk.
• Add a crust: If you want a bottom crust, line the dish with pie dough before filling.

If you love the flavors but want something baked entirely from scratch, our Chicken and Dumplings recipe is a great match.

How to Make Creamy Chicken Pot Pie Casserole

Step 1: Sauté the Vegetables

Melt the 4 tbsp butter in a 12-inch oven-safe skillet or wide braiser over medium heat. Once it’s foaming, add the diced onion, carrots, and celery along with a pinch of salt. Cook for about 6 to 8 minutes, stirring now and then, until the vegetables soften and the onion turns translucent.

You’ll smell the carrots and celery releasing their sweetness. The onion should look glossy and limp, not browned.

Step 2: Build the Creamy Sauce

Sprinkle the 1/4 cup flour over the vegetables and stir it in to coat everything evenly. Let it cook for 1 full minute to lose that raw flour taste. Slowly pour in the 2 cups chicken broth while whisking, then add the 1 cup milk and keep whisking until the mixture is smooth. Let it come up to a gentle simmer and cook for 3 to 4 minutes, stirring often, until the sauce visibly thickens and coats the back of a spoon.

The liquid will look thin at first, then suddenly start clinging to the vegetables. As it thickens, the surface will show lazy bubbles rather than a rapid boil.

Step 3: Fold in Chicken and Peas

Drop the 4 oz cream cheese cubes into the sauce and stir until they melt completely into a silky finish. Turn off the heat. Fold in the 3 cups shredded chicken, 1 cup frozen peas, 1/2 tsp salt, 1/4 tsp pepper, and 1/2 tsp dried thyme. Taste and add a little more salt if you think it needs it.

The frozen peas will brighten the filling with pops of green and keep their texture as everything bakes. The cream cheese gives the sauce a glossy, smooth look that promises a rich bite.

Step 4: Top with Biscuits and Bake

Arrange the 8 raw biscuits right on top of the filling, spacing them apart because they will expand. Slide the skillet into a 400°F (200°C) oven and bake for 20 to 25 minutes. You’re looking for biscuits that are deeply golden on top and a bubbling filling around the edges. If the biscuits brown too fast before the filling is hot and bubbly, lay a piece of foil loosely over them for the last few minutes.

The kitchen will smell like butter and thyme, and you’ll hear the filling softly sputtering against the pan’s edge.

Step 5: Scoop and Serve

Let the casserole rest for 5 minutes once it comes out of the oven. Then grab a big spoon and scoop servings straight from the skillet, making sure everyone gets a fluffy biscuit and plenty of creamy filling.

The first spoonful pulls up a tender biscuit cap and a steamy, pale golden sauce packed with chicken and vegetables.

A Few Tips Before You Start

• Don’t rush the veggie sauté.: Softening the onion, carrots, and celery properly means they finish cooking in the oven instead of staying crunchy.
• Use a rotisserie chicken: for the fastest route. Shred it while the vegetables cook.
• Room temperature cream cheese: melts into the sauce smoothly without leaving little white specks. If yours is cold, cut it into very small cubes.
• Keep an eye on the biscuits late in baking.: Ovens vary and the difference between golden and too dark can be a minute or two.

Keeping Leftover Casserole Fresh

• Refrigerate: Store covered for up to 4 days. The biscuits will soften as they sit, but they still taste wonderful reheated.
• Reheating: Warm individual portions in the microwave or reheat the whole dish in a 350°F oven until the center is hot. Cover with foil to prevent the biscuits from over-browning.

What to Serve with Chicken Pot Pie Casserole

A crisp, simple salad with a lemon vinaigrette cuts right through the richness of the casserole. The brightness makes each creamy bite feel fresh rather than heavy. Steamed green beans with a little butter are another easy side that adds a pop of color on the plate.

Frequently Asked Questions

Can I use puff pastry instead of biscuits?

Yes, thaw a sheet of puff pastry and cut it to fit your dish. Bake at the same temperature until puffed and deeply golden, about 20 minutes.

Can I assemble this ahead of time?

You can make the filling a day ahead and refrigerate it. When ready to bake, warm the filling gently on the stove, transfer to a baking dish if needed, top with biscuits, and bake. You may need 5 extra minutes.

Can I freeze this casserole?

Freeze the unbaked filling without biscuits in an airtight container for up to 3 months. Thaw overnight in the fridge, pour into a baking dish, top with fresh biscuits, and bake. Add 10 to 15 minutes to the bake time.

What if I don’t have an oven-safe skillet?

Sauté the filling in whatever pan you have, then pour it into a greased 9×13-inch or 2-quart baking dish before topping with biscuits and baking.

Chicken Pot Pie Casserole Recipe

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Prep Time 15 minutes mins

Cook Time 30 minutes mins

Total Time 45 minutes mins

Servings: 6 servings

Calories: 482

Ingredients Method Notes

Ingredients

  

• 4 tbsp unsalted butter
• 1 cup diced yellow onion
• 2 garlic cloves, minced
• 1 cup diced carrots
• 1 cup diced celery
• 1/4 cup all-purpose flour
• 2 cups chicken broth
• 1 cup whole milk
• 4 oz cream cheese, softened
• 3 cups cooked shredded chicken
• 1 cup frozen peas
• 1/2 tsp salt
• 1/4 tsp black pepper
• 1/2 tsp dried thyme
• 1 can (16.3 oz) refrigerated buttermilk biscuits (8 count)

Method

 

1. Melt butter in a 12-inch oven-safe skillet over medium heat. Sauté onion, carrots, and celery until softened, 6 to 8 minutes. Add garlic and cook 30 seconds.
2. Stir in flour and cook 1 minute. Slowly whisk in broth and milk. Simmer, stirring, until thickened, 3 to 4 minutes.
3. Remove from heat. Stir in cream cheese until melted. Fold in chicken, peas, salt, pepper, and thyme.
4. Arrange biscuits on top of the filling. Bake at 400°F (200°C) for 20 to 25 minutes, until biscuits are golden and filling bubbles.
5. Let rest 5 minutes, then scoop servings with a biscuit and plenty of filling.

Notes

Let the casserole cool for those 5 minutes before scooping so the filling sets into that perfect creamy consistency. If your skillet feels a bit too full when topping with biscuits, transfer everything to a 9×13-inch baking dish first.