Rinse the black beans and drain. Put them in a large roasting pan and bake at about 375°F for about 10 to 15 minutes. Let cool at least slightly.
2 cans black beans
In a large bowl, use your hands or a potato masher to crumble the tortilla chips into very small pieces.
1 ounce tortilla chips
Add the beans and mash with a potato masher or fork until the beans are mostly mashed but some large pieces remain.
Add the quinoa, corn, green onions, garlic, and cilantro, and mix.
½ cup corn kernels, 2 green onions, 1 garlic clove, ¼ cup cilantro, ½ cup cooked quinoa
Add the spices (cumin, coriander, salt, and pepper). Feel free to add a pinch of hot stuff like cayenne or chili powder if that makes you happy. Mix until uniform.
1 tablespoon cumin, 1 teaspoon coriander, 1 teaspoon salt, ½ teaspoon pepper, ¼ teaspoon cayenne or other spicy ground pepper
In a small bowl, beat the eggs for a few seconds to combine and then add it to the bean mixture. Stir the eggs into the mixture until it comes together. This can be made ahead and held in the refrigerator for a few hours.
2 eggs
Form into patties of desired size and fry in a thin layer of oil on a griddle, cast iron skillet, or other frying pan, about 5 minutes on one side. Flip and cook an additional 3 or so minutes until browned.
1 tablespoon neutral oil like vegetable, corn, or safflower