2 cup chicken, cooked and diced
3 Tbsp unsalted butter
1/2 yellow onion, diced
3 celery stalks, diced
1 cup fresh broccoli florets, chopped
1/4 cup all purpose flour
3/4 cup chicken broth
1 cup heavy cream
1 cup milk (I used skim)
pinch of crushed red pepper flakes
1 tsp kosher salt
1/2 tsp ground black pepper
1 cup cheddar cheese, shredded
1/2 package pie crust (I used Pillsbury), thawed