1 cup dried black beans, soaked for a few hours and cooked until tender, then drained (you can skip the soaking if you use a pressure cooker). Substitute, if you like, with 2½ cups of canned black beans, drained.
1 cup garbanzo bean flour or chickpea flour or besan
½ cup rolled or instant oats
½ cup cooked brown rice
½ cup walnuts
¼ cup frozen corn kernels
1 onion, chopped
1 tsp red chilli powder (reduce, for less heat, or substitute with 1 chipotle chili in adobo sauce)
½ cup minced savory herbs (like sage, marjoram, oregano or thyme)
2 tsp garam masala
Salt to taste
Put all the ingredients into a food processor, and process until grainy and still very textured.
Heat a cast-iron or non-stick skillet and spray lightly with oil.
Form two-inch discs with the burger batter and drop them into the skillet. The batter will be a little runnier than you’d expect, but it will set and form into firm patties as the burger cooks.
Flip over when the underside is golden-brown, and cook on the other side about 3-4 minutes.
Recipe by Holy Cow! at http://holycowvegan.net/2010/07/fat-free-spicy-black-bean-burgers.html