This is one of my favorites for a quick lunch.
3 large potatoes, peeled and roughly grated, or else pre-cooked and mashed.
1 large carrot, grated or finely chopped
About 1/2 cup fresh or frozen peas
2-3 onions, sliced and fried
3 eggs, beaten and salted and spiced to taste
If I ever want to make this dish dairy, I think some grated cheese wouldn't go amiss either.
Mix all ingredients in a baking pan and press slightly with the back of a spoon.
Bake at medium heat for about one hour, or until the top of the quiche is nicely browned.