Effective Archivist – Recipes from Seattle Rationality Reading Group Dinner. Chosen for being delicious, well-tagged for lots of diets, vegetarian or vegan, and easy to feed to a crowd.
Cooking on a Bootstrap – Collection of extremely cheap recipes (British). Lots are vegan, plus non-vegan as well.
Wikibooks’ Vegan Cuisine Cookbook – It’s a Wikimedia project, so I assume it’s all basically accurate.
All Creatures recipes – Large collection of vegan recipes
Budget Bytes – Tasty recipes, many vegetarian, with cost info included
Oh She Glows – Lots of vegan recipes
Minimalist Baker – Lots of vegan recipes
Healthy Vegan Recipes from Konikiff Dentistry – Set of recipes and other info about plant-based diets. Sent in by a fan!
Leanne Brown’s cookbooks – Mostly-vegetarian free PDF cookbooks for cooking on $4/day or less
The Peter Special – Grains + beans + veggies + sauce – with lots of well-thought out options and discussions for a cheap, ethical, lightning-fast meal.
Soylent – higher cost but near-zero effort