-
In a large bowl, mash the black beans with a fork. Add the breadcrumbs, onion, mayo, cayenne pepper sauce, garlic powder and season with salt and pepper. Crack in the egg and stir well. The mixture should not look wet and should stick together easily. Add a sprinkle more breadcrumbs if needed.
-
Form the bean mixture into four balls. Press a chunk of cheddar into the middle of each ball and form the mixture around the cheese to make a patty. Press flat.
-
Heat a large skillet over medium, add the olive oil and butter. Cook the burgers for 5-7 minutes or until a crust forms, then flip. Add a slice of cheddar on top of each patty and cook another 5-7 minutes, until the cheese is melted and the patty is crispy on the bottom.
-
Toast the buns until crisp. Spread the buns with whatever condiments you like – ketchup and/or mayo – then place the patties on the buns. Top with lettuce, tomato and red onion. Serve immediately!