Creating your Cheesy Potato Breakfast Casserole can be simple if you follow these clear steps:

1. Preheat the Oven: Start by preheating your oven to 350°F (175°C).
2. Prepare the Dish: Grease a large baking dish (9×13 inches) with cooking spray or butter.
3. Layer Hash Browns: Spread the thawed hash browns evenly in the bottom of the prepared dish.
4. Add Sausage: Sprinkle the cooked breakfast sausage over the layer of hash browns.
5. Mix Eggs and Milk: In a large mixing bowl, whisk together the eggs, milk, garlic powder, onion powder, salt, and pepper until well combined.
6. Pour Egg Mixture: Carefully pour the egg mixture over the hash browns and sausage in the baking dish.
7. Top with Cheese: Sprinkle the shredded cheddar cheese evenly on top of the casserole.
8. Bake: Place the dish in the preheated oven and bake for 45-50 minutes or until the eggs are set and the top is golden brown.
9. Cool Slightly: Once baked, remove the casserole from the oven and let it cool for about 5-10 minutes before serving.
10. Garnish: Add chopped green onions on top for an extra pop of color and flavor right before serving.

Following these steps ensures a beautifully made Cheesy Potato Breakfast Casserole every time.