Cut, crosswise, into thin slices, using the handle of a wooden spoon to prevent knife from cutting all the way through.
Put potatoes in a baking dish; fan slightly. Drizzle with butter.
Sprinkle with salt and herbs.
Bake potatoes in 425°F (220°C) oven for 50 minutes.
Remove from oven.
Sprinkle with cheeses.
Bake 10-15 minutes longer or until lightly browned and cheeses are melted.