1: Butter a 9x13 deep baking dish.
2: Spread hash browns in dish and bake at 375°F for 20 minutes until softened.
3: Take out of the oven and use a cup to press the hash browns down into the dish to form a crust.
4: Sauté the sausage, peppers, and onion until sausage is cooked through.
5: Add the spinach until wilted.
6: In a bowl, whisk together the eggs, milk, garlic powder, salt, pepper, and parsley.
7: Pour the sausage and spinach mixture into an even layer on top of the hash brown crust.
8: Pour the egg mixture over the entire dish.
9: Sprinkle over cheddar cheese.
10: Bake at 400°F for 25-35 minutes. Test with a fork to make sure eggs are set.