Though having the look of an old cookbook (it doesn't have a picture for every single recipe), this book does cover different types of vegetarian dishes: appetizers, soups, pasta, legume dishes, egg and cheese dishes, whole grains, desserts, and lasagne. Other varieties are also found: wheat germ burgers, chili pot pie, mabu tofu, brown rice & broccoli, black bean hummus & carrot slaw sandwiches, corn custard, and many more.
This book is brought to readers by the Editors of Sunset Books.
I recently found a website that can help to answer the question from many friends and acquaintances "How can you sustain your life if you don't eat meat?": www.nutritiondata.self.com. You can type in "asparagus", "brussel sprouts", "turmeric", "tofu", "broccoli", "peanuts", "whole wheat", "quinoa", "black bean", "squash", etc. in the seach box for "name of food", you will get amazing answers in colorful graphical charts.
This website might even help to transform your friend's perspective towards vegetarian food.