Preheat the oven to 400 degrees F.
Place the potatoes in large pot of salted water and bring to a boil. Boil the potatoes until just tender, 20 minutes. Drain and transfer to a large baking dish.
Top the potatoes with the grated cheeses and season with salt and pepper. Sprinkle the butter over top. Roast in the oven until bubbling and golden brown, about 30 minutes.
This recipe was created by a contestant during a cooking competition. The Food Network Kitchens have not tested it for home use, therefore, we cannot make any representation as to the results.