Do not peel the potatoes; bring them to a boil in a pot of water for 10 minutes, until you can pierce them with a fork — but they should not be mushy.

Let cool, peel, and dice. You can do this the day before (or before you go to class).

In a large frying pan, sauté the onions in a generous amount of olive oil (coat the bottom of your pan). Add salt and pepper to taste; when the onions are a golden brown, add diced potatoes and sliced mushrooms. Salt and pepper it again to taste. This is where you’ll add any of your add-ins. Red pepper is good for color and broccoli is especially delicious here. If you’re adding cheese, wait and add it to the eggs.

Beat the eggs and add a dash of salt and pepper to them. If this is a dairy meal, you can add up to a half cup milk or cream to improve texture. If you are adding cheese to the eggs, you’ll need less salt.

Add eggs to pan and stir. Cover pan and put on a low flame for 20 minutes until eggs set.

It forms a nice crust on top and (hopefully) it should slide out if you turn it upside down.

Serve with a dollop of sour cream, if desired. Or sauté some more onions and mushrooms and use that as a garnish.