Preheat oven to 350°F (176°C). Cut slits on the potatoes, do not cut through. Place the potatoes in a roasting pan and brush with the olive oil and melted butter. Add the garlic, parsley, lemon and thyme in the pan, in between the potatoes. Sprinkle with salt and black pepper.
Roast the potato for 1 hour, basting the oil mixture at 30 minute interval. After 1 hour, add the Parmesan cheese on top of the potatoes, sprinkle evenly on top. Turn off the heat of the oven, and leave the potatoes in the oven for about 5-10 minutes, or until the cheese is melted. Serve immediately.
Notes
Don't discard the garlic, they are so delicious after the roasting. Eat the potato and with the garlic.