Search for Recipes by Ingredient - Recipe Puppy
http://www.recipepuppy.com/
thanks to lifehacker for this link
Search engine for finding recipes based on what you have in the house!Lifehacker - Recipe Puppy Chooses Meals Based on the Ingredients You Have - Search engines
Recipe Chimp ingredientes
Recipes Search Engine aka "Google Recipes"
Enter what you have in your pantry and get a list of recipes
RecipeChimp is an ingredient-based search engine. All you have to do is enter in some ingredients and they'll show you a ton of tasty recipe options.