ZiZi's Simple Cheese Onion Pie
My mother made this when I was small. I'm not much of a baker, so I use store bought pie shells - not the frozen type. While not totally as wonderful as mom's crust, it's pretty darned close. Note: if you don't have sweet onions available, I've found that steaming regular yellow onions works very well as a substitute. A great dish reheated as well.