Preheat the oven to 375ºF / 190ºC degrees.
Spray a large baking dish with cooking spray.
Combine the chicken and cornbread in a large bowl and set aside.
In a large pan, melt the butter over a medium heat and add in the frozen vegetable mix together with the leek. Cook, stirring regularly, for around 6 minutes until the vegetables are browned and any liquid has evaporated.
Sprinkle with the flour and stir, continuing to cook for around one minute before adding in the broth, poultry seasoning, thyme, salt, and pepper.
Stir regularly whilst it comes to a boil, then turn down the heat and continue to cook for a few more minutes until the liquid starts to thicken.
Remove from the heat and set aside to cool for around 15 minutes.
Add the eggs and blanched asparagus to the chicken and cornbread followed by the cooled broth and mix well.
Pour into the greased baking dish.
Cover with foil and bake for 25 minutes, then remove the foil and bake for a further 15 minutes.
Enjoy!