How Low Can You Go? $10 Meals for 4 on NPR - Four recipes submitted by professionals, all ringing in under $10. Personally, I love Jose Andres (a charming Spaniard, though aren't they all ;-), but all of the recipes look good!
From Chef Jose Andres, A Family Favorite For $10
Navy Chef Gets Creative With A $10 Skate Meal
Chef Ming Tsai Makes $10 Dish His Kids Love
The Neelys Get Playful With A $9 Mac 'N' Cheese
And if you continue on to the comments, you'll find hundreds of recipes submitted by readers.