Mash the avocados and add the onion, lime juice, and garlic salt.
In a small sauce pan, heat the beans, stirring often, until heated through. Get ready to assemble: Layer on some avocado mixture, cilantro, beans, and tomatoes. Enjoy!
Recipe by Epicurean Vegan at http://epicureanvegan.com/2012/07/08/guac-bean-tacos/