Start by preheatin your oven to 425 degrees F (220 degrees C). This helps the crust get that golden on a timer.
Next, melt butter over medium heat in a saucepan. Toss in the chopped onion and cook till it’s soft and smells dang good. This is where your flavor builds up.
Stir in the flour, salt, and pepper quickly and well. Gotta make sure these mix, so no lumps sneak in your filling.
Gradually add the chicken broth and milk while stirring. Keep on that stove until the mixture thickens and hits a boil. Watch the broth depth, you want it just right — thick but pourable.
Remove from heat, and stir in your diced cooked chicken and frozen veggies. This filling’s ready for the crust now.
Lay one pie crust into a 9-inch pie plate. Pour the chicken pot pie filling inside nice and steady.
Cover the whole thing with the second pie crust. Seal edges tight and cut slits on top so steam can escape when baking. Pop it in your preheated oven and bake 30 minutes till crust’s golden brown. You’ll smell it from the hallway.
Wait for pie to cool slightly before serving. Enjoy your cozy, delicious chicken pot pie.