Gluten-free all purpose blends are generally your safest bet (see my GF flour recipe in Everyday Happy Herbivore). I've also found oat flour works pretty well. You can also try this GF substitute to replace seitan or vital wheat gluten.
Lindsay S. Nixon
Hi I'm Lindsay also known as the Happy Herbivore. I've dedicated myself helping folks lose weight on a vegan diet. I been blogging since 2006, written 6 books, and started a business called Meal Mentor.