Potato Chicken Casserole (Print Version)

# Ingredients:

01 - 3 tablespoons unsalted butter.
02 - 8 ounces mushrooms, sliced.
03 - 1 cup chopped onions.
04 - 2 tablespoons all-purpose flour.
05 - 1 cup milk (or half-and-half).
06 - Freshly ground black pepper, to taste.
07 - Kosher salt, to taste.
08 - 2 cups diced cooked potatoes.
09 - 2 cups diced cooked chicken.
10 - 1 cup soft breadcrumbs (optional).
11 - 2 tablespoons unsalted butter, melted (optional).
12 - 1 cup shredded cheddar cheese or Monterey Jack (optional).

# Instructions:

01 - Preheat oven to 350 F/180 C/Gas Mark 4. Lightly grease a 2-quart baking dish.
02 - Heat butter in large skillet over medium heat. Add mushrooms and onions, cook until tender and lightly browned, about 8 minutes.
03 - Stir flour into pan and cook 1-2 minutes. Gradually add milk, stirring until thickened, 3-5 minutes. Season with pepper and salt.
04 - In prepared baking dish, combine potatoes, chicken, and mushroom sauce mixture.
05 - Top with either buttered breadcrumbs (toss breadcrumbs with melted butter) or shredded cheese.
06 - Bake for 25-30 minutes until hot and bubbly.

# Notes:

01 - Can use either breadcrumb or cheese topping based on preference.
02 - Perfect way to use leftover chicken and potatoes.