crustless quiche is super easy - the main thing that makes a quiche taste like a quiche is the nutmeg - otherwise you can do the same thing without nutmeg and its a fritatta! its all the same and tastes great :) here is the base:
crustless quiche "base"
egg
pepper
salt
just a smidge nutmeg
any other ingredients you want*
line baking pan with butter/ghee, coconut oil or bacon fat
bake at 350 for 20-30 minutes
*here's some great ingredient ideas to add to the quiche: