I've been making this for my family for over 25 years, it came from the LLLI cookbook, Whole Foods for the Whole family. The original recipe calls for beans, I have never used them as I can't stand them, so I have included them as optional. This is a very kid friendly recipe, and easier for them to eat then hard shell tacos. It is NOT very spicy, if you like it spicy add more hot sauce, some green chilies, more cumin, etc. Pepper jack on top would also spice it up some more. The crust is very different, more bread or biscuit - like not at all like a regular pie crust. When you spoon it in the pan is will seem all gooey and you'll wonder how it works.