Instructions:

Preheat the oven to 350 degrees.
Add the chicken and broccoli to a large mixing bowl.
Pour the soup and milk into the mixing bowl along with the garlic powder. Stir to combine well.
Layer the chicken and broccoli mixture into the bottom of a well-greased 9×13 baking dish.
Top with the shredded cheese.
In a bowl, combine the breadcrumbs and parmesan cheese.
Sprinkle the breadcrumb mixture over the casserole.
Bake for 30 minutes.
Let sit for 10 minutes before serving.