This is an inexpensive basic quiche to which you can add different fillings. It's called 1 - 2 - 3 because the proportions are about one cup of filling, two cups of half and half and 3 large eggs. My easy pie crusts make this a snap to do for a quickie lunch/brunch/potluck. It's easily made into a dozen different quiches for parties. I make this recipe easy by having pie crusts in the freezer - I always make 5 or six crusts at a time, flatten into discs and double wrap them for the freezer (Recipe #300887). I pre- cook any fillings that need it, and mix the custard up in the morning. When the girls pop in it's easy to finish. Hope you try this!