Actually called Three Layer Mexican Pie, this dish entails using a whopping FOUR cans of beans. Needless to say, putt-putt was a euphemism among old friends for, uh, poots!
This dish is from Fat Free Vegan.com. It has a nice "cheaze sauce" in it that I can see using for other recipes. The top is covered in hash browns. Home-cooking, easy, cheap, and good for you. Yay!!