In a small skillet sauté garlic and onion in oil over medium-low heat, cook until tender, about 4 minutes. In a large bowl add beans and mash with a fork. Combine garlic, onion along with all other ingredients-- except buns.
Shape bean mixture into 4 patties, place on a plate, cover and refrigerate for 1-2 hours.
Lightly spray a large non-stick skillet with cooking spray, heat to medium-low and cook approximately 15 minutes or until thoroughly heated through and both sides are lightly browned.
Try topping burgers with a little spicy salsa & 2% cheddar or go traditional and add lettuce, tomato, pickle and mustard.