To start, preheat your oven to 425 degrees F. Wash the potatoes and cut them in half, then score them with a sharp knife into a diamond shape. Toss the potatoes in a bowl with olive oil, parsley, garlic powder, and salt.
Next, grate the Parmigiano Reggiano cheese and pour the melted butter on top, mixing until you have a thick paste. Spread this mixture evenly in a large baking dish.
Now, take each potato half and press it into the cheese mixture, cut side down. Repeat until all the potatoes are in the dish. Bake for 25-26 minutes until golden brown and crispy.
Once done, remove from the oven and let the potatoes rest for 10 minutes to allow the cheese to harden. Then, use a spatula to remove them from the pan, break them into pieces, and enjoy these irresistible treats!