In a small pan of boiling water, cook the garlic for 4 minutes to soften. In a large bowl, mash the garlic, beans, mayonnaise, chili sauce, and lime juice with a potato masher or fork. Add finely diced vegetables, stir in the bread crumbs, scallions, and Mrs. Dash. Shape into 8 patties.
Dredge the patties in the flour, shaking off the excess. In a large nonstick
skillet, heat the oil over moderate heat. Sautee the patties for 3 minutes per side or until browned and crisp on the outside and heated through.
Place the burgers on hamburger buns and top each with lettuce, tomato, and onion.