1. In a food processor, combine black beans, corn, breadcrumbs, onion, garlic, cumin, chili powder, salt, and black pepper. Pulse until well mixed but still slightly chunky.
2. Form the mixture into 4 patties.
3. Heat a skillet over medium heat and lightly oil it. Cook the patties for about 4-5 minutes on each side, until golden brown and heated through.