Drain and rinse the black beans, shaking off any extra water

Add the black beans, diced onion, and garlic cloves to a food processor

Process until the onions and garlic are combined into the beans and no chunks remain. The mixture should resemble refried beans

Transfer the black bean mixture to a large bowl. Add the egg, bread crumbs, oat flour, parmesan, cumin, salt, pepper, paprika, and chili powder.

Mix well to combine

Form the black bean batter into 6 burgers. If you want a thicker burger, you can make 5 instead of 6.

Coat a skillet with olive oil, and heat to medium heat

Cook the burgers for 5 - 8 minutes per side, until browned on both sides

Serve with toppings of choice