Preheat oven to 400 degrees.

Spray a 13x9 baking dish with cooking spray and set aside.

Cut your potatoes into one-inch pieces. Place cut potatoes in bowl of cold water for 30 minutes.

Drain water. Add dressing, salt, and pepper to bowl and stir to cover all potatoes.

Transfer to baking dish and place in oven for 20 minutes. Flip all potatoes in dish and return to oven for an additional 20 minutes.

Remove again and sprinkle Parmesan cheese across all the potatoes. Place oven on broil and cook for another 5 minutes. Devour with your favorite meal :)