Place the potatoes in a large pot of water. Cover and bring the water to a boil. Continue boiling until the potatoes are tender, about 15 minutes. Drain and return the potatoes to the pot. Coarsely mash the potatoes. Using a large fork, stir in the Parmesan, oil and scallions. Season the potatoes with salt and pepper, and then serve.
Recipe courtesy of Kimberly Schlapman