1cupchicken gravy mix prepared as per packet instructionsfor saucier filling use 2 prepared packets
1/2teaspoonthyme
1/2 teaspoonpoultry seasoning
1teaspoonKosher salt
1teaspoonfresh ground pepper
2tbspolive oil
Puff Pastry Top
1packagepuff pastrythawed
1egg for egg wash
1tbspheavy creamfor egg wash
Instructions
Preheat oven to 375ºF.
Chicken filling instructions
Cut cooked chicken into bite size pieces, set aside.
Heat olive oil in a large heavy skillet or dutch oven. Add the potatoes, carrots, onion and celery. Saute until tender, about 8-10 mins.
Add the green peas, corn and chicken to the skillet of sautéed vegetables.
Stir in the prepared chicken gravy. Bring to a simmer, then transfer to a 9 x 13 baking dish. Let cool a bit before topping with the puff pastry. Hot filling can melt the butter in the pastry, preventing it from puffing up and can cause a soggy crust.
Place the chilled puff pastry to cover casserole dish slightly larger than the baking dish. You may need 2 sheets to cover the dish. Press the edges into the rim of the dish to seal it.
Prepare the egg wash
Using a fork, whisk the egg and cream until well combined.
Brush the egg wash mixture to coat the puff pastry.
Use a sharp knife to cut small slits (vents) into the puff pastry. This allows steam to escape during baking, which helps the pastry puff and cook evenly.
Baking
Pre-heat the oven and bake 375º F for 40-50 minutes. The puff pastry top should be golden brown and the filling bubbly.
Let the casserole rest for 5-10 minutes before serving.