Cook sausage in a skillet over medium heat 5–7 minutes until browned and crumbled.
In a large bowl, mix cream cheese, cheddar, milk, garlic powder, onion powder, salt, and pepper until creamy.
Add thawed hash browns and stir to coat evenly.
Fold in cooked sausage.
In a separate bowl, whisk eggs and pour into casserole mixture.
Spread mixture into a greased 9×13-inch baking dish.
Bake at 350°F (175°C) for 45–50 minutes until golden and set.
Let rest a few minutes, garnish with green onions, and serve warm.
