Hash Brown Casserole

Directions

1. 1
   Preheat the oven to 375 degrees F. Coat a 9- by 13-inch baking dish with cooking spray.
2. 2
   Whisk together the yogurt, milk, sour cream and flour in a large bowl.
3. 3
   Stir in the hash browns, 1/2 cup of the Cheddar, 2 teaspoons salt and 1/2 teaspoon pepper.
4. 4
   Set aside.
5. 5
   Melt the butter in a large skillet over medium-high heat.
6. 6
   Add the onions and cook, stirring often, until soft and lightly browned, about 10 minutes.
7. 7
   Add the mushrooms and cook, stirring often, until the mushrooms are wilted and the onions begin to brown, about 10 minutes more.
8. 8
   If the pan gets too hot, add a splash or two of water as needed.
9. 9
   Stir in the garlic and cook for 1 minute.
10. 10
    Stir the vegetables into the hash brown mixture to combine.
11. 11
    Spread the mixture evenly in the prepared dish.
12. 12
    Sprinkle with the remaining 1/2 cup cheese, the breadcrumbs and nutmeg if using.
13. 13
    Bake until a deep golden brown, about 45 minutes.
14. 14
    Sprinkle with parsley and serve.