Combine tomato, rosemary, parsley, vinegar, garlic, oil, and beans in a large bowl, stirring well. Sprinkle 1/4 teaspoon salt and 1/4 teaspoon pepper over bean mixture; stir to combine.
Heat a grill pan over medium-high heat. Sprinkle steaks evenly with remaining 1/2 teaspoon salt and remaining 1/2 teaspoon pepper. Coat pan with cooking spray. Add steaks to pan; cook 3 minutes on each side or until desired degree of doneness. Serve with bean mixture.