2 tablespoons balsamic vinegar
1/3 cup fresh parsley, chopped
4 garlic cloves, finely chopped
Ground black pepper, to taste
1/4 cup extra-virgin olive oil
1 can (15 ounces) garbanzo beans, rinsed and drained
1 can (15 ounces) black beans, rinsed and drained
1 medium red onion, diced
6 lettuce leaves
1/2 cup celery, finely chopped