Use your food processor to combine the black beans until halfway mashed, or mash with a fork. If you do not have
Add minced onions, salt, garlic powder, parsley, and chili powder and process to combine.
Add flour, a bit at a time, while blending together to combine. You may need a little bit more or less than 2/3 cup. Beans should stick completely together.
Form into patties and panfry in a bit of oil for 2 to 3 minutes on each side. Patties will appear to be done on the outside while still a bit mushy on the inside, so fry them a few minutes longer than you think they need.