Preheat oven to 425°F (220°C).
Peel and shred potatoes using a box grater.
Place shredded potatoes into a clean towel and squeeze out as much moisture as possible.
In a large bowl, combine shredded potatoes, melted butter, olive oil, garlic powder, onion powder, paprika, salt, black pepper, and parmesan cheese.
Mix well until evenly coated.
Line a baking sheet with foil and lightly grease it.
Spread the potato mixture evenly into a large thin layer.
Bake for 35–45 minutes until deeply golden brown and crispy.
Optional: Flip halfway through baking for extra crispiness.
Let cool slightly before slicing and serving.
