Heat the oil in a skillet over medium high heat. Add the onion, peppers, and garlic and cook until vegetables soften, about 5-7 minutes.
In a large mixing bowl, use a large wooden spoon or hands to combine the onion mixture, beans, egg, panko, cheese, cilantro, scallions, cumin, oregano, salt, and pepper. Shape into 4-6 patties about 1/2-inch thick.
Heat oil in a non-stick skillet over medium-high heat. Add the patties and cook each side until golden brown and warmed through, about 4 minutes per side. Serve warm on a toasted bun with pickled onions, lettuce, avocado, and chipotle mayo.
Find it online: https://www.gatheranddine.com/black-bean-cheddar-burgers/