This burger is so moist and flavorful, you'll want to sink your teeth right into it.
Pulse black beans, garlic, and onion together in a food processor until finely chopped.
Place in a large bowl and combine with egg, panko, and 2 tablespoons mayo.
Season generously and mix. Form 4 patties and set aside to firm.
Heat oil in a large skillet. Add patties to hot pan and saute until golden on both sides and cooked through.
Top each patty with cheese and cover the skillet to melt.
Spread butter/nondairy alternatives on the inside of your burger buns. Cook cut side up on the skillet until toasty.
Assemble the burgers according to your tastes.
Enjoy :)