How to Make It
Preheat oven to 425°F.
Separate the eggs and stir together the egg whites and mashed potatoes in a large bowl until well combined.
On a lightly greased baking sheet, evenly divide the mashed potato mixture into two mounds. Make a well in the center of each mound using the back of a spoon.
Bake for 5 minutes, or until the mashed potato is set and the bottom is just starting to brown.
Carefully place a yolk in the center of each hole.
Bake for another 5 minutes, or until yolk is set and the bottoms are golden.