Black Bean Burger Recipe

Name: Black Bean Burger Recipe
Prep time: 20 min
Cook time: 15 min
Total time: 35 min
Cuisine: Mexican
Ingredients: 1-2 tablespoons olive oil; 1 cup onion, diced; 4 garlic cloves, rough chopped; optional: 1 cup bell pepper, small dice, or sub poblano pepper or half a jalapeno; 2 teaspoons cumin; 2 teaspoons smoked paprika; 1 teaspoon coriander; 1 teaspoon salt; ¼ teaspoon chipotle powder, more to taste (or use cayenne or 1/2 teaspoon chili powder); 2 x 14-ounce cans black beans, rinsed, drained well (3 cups cooked), pat dry; zest from one small lime; 1 tablespoon lime juice; —-; 1 egg (or use ground flax- see notes); optional: ½ cup grated cheese ( cheddar, pepper jack, vegan cheese) or leave it out; ¼ cup cilantro, chopped; 1/4 cup scallions, chopped; ½ cup bread crumbs (or see notes)