To create the amazing Baked Hash Brown, follow these simple steps:

1. Preheat Oven: Preheat your oven to 425°F (220°C). Grease a baking dish with cooking spray or a little olive oil.
2. Prepare Potatoes: Rinse the grated potatoes thoroughly in cold water to remove excess starch, then drain and pat dry with paper towels.
3. Combine Ingredients: In a large bowl, combine the grated potatoes, chopped onion, melted butter, olive oil, garlic powder, salt, and pepper. Mix until well combined.
4. Form the Hash Browns: Press the potato mixture evenly into the prepared baking dish. Spread it out to form an even layer.
5. Bake: Place the baking dish in the preheated oven and bake for 40-45 minutes, or until the top is golden brown and crispy.
6. Add Cheese: If using cheese, sprinkle it on top during the last 5-10 minutes of baking. Continue to cook until melted and bubbly.
7. Cool Slightly: Once baked, remove from the oven and let it rest for 5-10 minutes to set before cutting.
8. Garnish & Serve: Sprinkle fresh chives over the top for a pop of color and flavor, then slice and serve warm.

These straightforward steps will guide you to achieving the perfect Baked Hash Brown!