in with large whisk.
in the same pan you cooked the potatoes and onions in, remove any extra bits that may burn. put 1.5 tablespoon oil on the pan, swirling it around so it coats the pan and put the heat on high. when it first starts to smoke, add the egg mixture and reduce the heat to medium. cook for 1 minute. place in the oven and bake for 10-15 minutes or until the egg has set.
remove the pan from the oven. carefully place a large dinner plate over the pan and flip it over. you can do this while hot or wait for the pan to cool as this 