Preheat oven to 350°.
Place tomato wedges on a baking sheet coated with cooking spray. Lightly coat tomatoes with cooking spray; sprinkle with 1/4 teaspoon salt and pepper. Bake at 350° for 1 hour.
Place tomatoes, 1/4 teaspoon salt, vinegar, and next 5 ingredients (vinegar through garlic) in a blender; process until smooth. Pour into a bowl. Stir in 1 teaspoon cilantro; set aside.
Combine onion, bell pepper, cilantro, and beans in a bowl; stir well. Add tomato mixture; toss well.