I've read lots of things about where this dish got it's name, but there doesn't seem to be a definitive answer. Some theories are that it simply means 'normal', and some that it was named after a heroine in an opera. I like to think there was a little Sicilian lady named Norma who dreamed this up. The traditional version uses ricotta, and there are lots of versions with parmesan or pecorino. You can of course top with whatever you like, or enjoy as-is which is simple, fresh and delicious. There are so many versions of how to make this dish, Rachel Ray has a version where the eggplant, tomatoes & garlic are roasted first, some pan fry the eggplant first. This is a method I find a little less time consuming and do-able for a weeknight meal. You could also use tinned tomatoes if need be, probably 2 of the large 28oz tins.