This recipe was the one that convinced me I was finally over my childhood aversion to mushrooms. It comes from "The Moosewood Cookbook" by Mollie Katzen, the book that basically taught me how to cook (and Mom, of course). This is not really a loaf (it's in a 9 x 13 pan), but I am going to honor the original chef's wishes and continue to label it so. Artistic license, I guess.