Bring a large pot of water to a boil. Preheat the oven to 425.
Add the potatoes to the pot, and boil until just fork tender.
Lay the potatoes out on a sheet pan. Bake for about 50 minutes.
When finished, Gently smash with a potato masher, keeping them in 1 piece.
Spread ghee or butter over each potato. Sprinkle with salt and garlic, and parmesan cheese if using.
Set oven to broil and move rack up to the highest spot. Broil for 2 minutes, or until lightly golden brown and crispy, rotating the pan halfway through. When done, top with fresh chives and serve!