Microwave sliced carrots for 3 minutes to soften prior to cooking.
In a large skillet, heat butter with chopped onions, sliced carrots, and allow to cook over medium heat for 5 minutes.
Next, add in spinach and allow to cook for an additional 2 minutes or until spinach is wilted down.
Add corn and green peas to the skillet and cook for an additional 2 minutes.
Now, add garlic powder, thyme, salt, pepper, and flour. Stir until vegetables are coated in flour.
Next, stir in milk and chicken broth. Stir for 3-5 minutes or until mixture begins to thicken.
Lastly, mix in your shredded chicken. Pour the mixture into greased baking dish.
Roll out puff pastry with rolling pin. Cut into 4”x 4”squares and place on top of chicken mixture and brush egg over top. Of note, you can use puff pastry dough or pre-made pie crust and break that into pieces to top off pot pie. Or you can pour filling into pre-made pie crust.
Place in the oven for 25-30 minutes or until puff pastry is golden brown.
Remove from oven and allow to cool for 10 minutes. Cut into squares, serve, and enjoy!