Chop the potatoes, onion, and corned beef into even bite-sized pieces, about 1/2-inch cubes. Heat a 10-inch skillet over medium heat, and add the oil. When it is hot, saute the potato, onion, and corned beef, turning the mixture with a spatula until the potato is soft and all the ingredients are crispy and browned about 10 minutes. Season to taste with salt and pepper.;
Recipe courtesy of Jesse Ziff Cool, "Breakfast in Bed: 90 Recipes for Creative Indulgences"