Step 1

Heat olive oil in a medium pan over medium heat. Add the onion and season with salt and pepper. Cook, stirring frequently, until the onion is beginning to soften, 5-7 minutes.

Step 2

Add a handful of leafy greens and stir until wilted, usually less than one minute.

Step 3

Add the mashed potatoes and break up into an even layer if cold. Allow to cook until heated through, scraping the bottom of the pan and flipping every few minutes.

Step 4

Add the cheese and continue to cook, breaking up, scraping, and flipping the potatoes every few minutes, until the potatoes and cheese have formed a brown crust throughout. Transfer to a plate, season with salt and pepper and top with a fried egg if desired.