In a large mixing bowl, mash the black beans with a fork or potato masher until mostly smooth.

Add the cooked quinoa, corn, red bell pepper, onion, garlic, cumin, paprika, bread crumbs, and beaten egg. Mix until well combined.

Season with salt and pepper to taste.

Form the mixture into 4 patties.

Heat a skillet over medium heat and add a little oil.

Cook the patties for about 5-6 minutes on each side, or until golden brown and heated through.

If using cheese, place a slice on each patty during the last minute of cooking to melt.

Toast the burger buns if desired.

Place each patty on a bun and top with lettuce, tomato, pickles, ketchup, and mustard as desired.

Serve immediately and enjoy!