Fire up your Pit Boss Platinum Series KC Combo and preheat the griddle to medium-low flame. If using a gas or charcoal grill, preheat a large cast iron skillet over medium-low heat.

Evenly distribute the cooled potatoes on a metal sheet tray, drizzle with olive oil, and use a potato masher or small metal bowl to gently smash each potato to a height of about ¼ to ½ inch (thinner potatoes will be crispier).

Mix together the butter and garlic. Brush the mixture over each potato, then season with Bold Burger Rub.

Pour vegetable oil on griddle, then add flattened potatoes. Cook for 3 minutes, then flip and sprinkle with half of Parmesan. Cook for 3 minutes, then flip, sprinkle with remaining Parmesan, and cook 1 minute.

Transfer to a pan, sprinkle with parsley and serve hot.