I haven't tried making crust yet and was short on time, so this recipe for Crustless Spinach, Onion, and Feta seemed perfect for me. Quiches are a nice break from my typical grain heavy breakfast, but still a fairly portable option that I can rush out the door holding in my hand.
I'm not sure if I didn't cook it quite long enough, but I found it to be a bit wobbly for quick transportation. It was much better once I started taking the time to toast it, adding a bit of crisp to the outside, and put a sprinkle of salt on the top. As I was missing the Feta, I substituted a 1/2 cup of Parmesan which worked out fine but I suspect without this substitution I would not have needed the salt.