3Grease a cast-iron skillet with neutral oil or butter to prevent sticking.
4Create a layer of shredded potatoes in the skillet, then season with salt, pepper, fresh herbs, cheddar and mozzarella mixture, and a layer of parmesan cheese.
5Repeat the layering process until the skillet is full, ensuring each layer is thin.
6Pour the butter and half and half mixture over the final layer of cheddar and mozzarella cheese, then top with a final layer of parmesan cheese.
7Cover the skillet with foil and bake at 365°F for 30 minutes.
8Remove the foil and bake uncovered at 350°F for another 30 minutes until golden brown on top.
9Let the potatoes sit for a minute before serving, and garnish with fresh chopped chives.