This will make one large pot pie ... baked in a large pie dish or round casserole dish. It can be made in advance and frozen, if desired. Just thaw on the counter for a few hours or overnight in the fridge before baking. If I have any filling leftover after filling the pot pie, I create a couple of small pot pies in those little foil pie tins and freeze them for another time.
Start by removing and shredding or chopping the meat from a rotisserie-style store-bought chicken ... or you can use any leftover chicken you may have. You'll need a good 2 -3 cups.
There really are no exact measurements to this ... use the amount of chicken or veggies you prefer.
In a large pan set to medium on stove top, add the following:
A few pats of butter
1/2 onion, finely diced
1 celery stalk, finely chopped
Sprinkling of salt and pepper
Next, add in a couple of cups of chicken stock. Whisk, then add a few splashes of heavy cream or half-and-half.
Allow to come to a simmer and add the following:
1/2 bag of frozen mixed vegetables (or any combination of fresh or frozen carrots, green beans, peas and/or corn equivalent to a couple of cups.)
2 - 3 peeled potatoes, chopped in small pieces
Then, pour mixture into a large, greased pie dish or round casserole dish.
Your choice of a (thawed) frozen pie crust, a refrigerated pie crust or (thawed) frozen puff pastry can be used on top. Or, if you're the baker-type, whip up a homemade pie crust. (I'm just not the baker type). I prefer puff pastry (as shown below).
For a pie crust-style top, be sure to cut a few slits in the crust after placing it on the "pie." Seal edges. Brush pie crust with an "egg wash," a mixture of 1 egg and a few splashes of water whisked together. Sprinkle pie with a small amount of kosher salt.
For a puff pastry-style crust, roll pastry on a lightly floured surface to thin it out a bit, then I do a lattice pattern. Start by cutting the puff pastry into 10 - 12 strips.
Then, weave the strips onto the filling.
Allow to "rest" after baking for 15 minutes to allow pie to "set."