Call for recipes ... and some answers

On Tuesday I'll be doing the final session of my Centre's frugal living workshop. I told everyone I'd bring along a few more thrifty recipes for them to try, so I'm asking you all for your help. I'll be taking along the extra recipes I promised them, but I'd like to include more. I want everyone to rack their brains and give me just one recipe. It should be the recipe you think everyone should