Longtime VO member Mark Foy has two "shareware" cookbooks available via his Vitalita website. (Shareware = if you try them and like them, he asks you to make a $10 donation to Vegan Outreach -- always a good idea! :-)
These aren't all the simplest or quickest recipes (although many are). But if you want to learn a lot about vegan cooking and explore new ingredients at no risk, you can check them out!
Here is another reason to explore vegan cooking (old link, but still relevant).