Someone already mentioned Mark Bittman's "How to Cook Everything Vegetarian" and its wonderful. I keep getting it from the library but I really need my own copy.

My other go-to's are "Vegan With a Vengeance" and "Veganomicon" but I understand that most people aren't vegan. Still, they are great cookbooks that have lots of recipes for healthy, good food and many of them don't call for weird ingredients.