Perfect for rainy (or snowy) days, when you can get up and get a plate of seconds easily. I make a two-crust pie, but most recipes for onion pie use just a bottom-crust. I use a shortening-based pie dough, which I think lets the flavor of the onions take center stage; though, a butter crust would certainly compliment the onions nicely. I've seen some recipes that call for bacon, and of course; bacon is just plain good. I think my recipe is pretty basic, so I look forward to seeing reviews with modifications. Enjoy!