Place bell peppers and onion on grid over medium, ash-covered coals. Grill vegetables 10 to 12 minutes (over medium heat on preheated gas grill 10 to 12 minutes) until tender, turning occasionally.
Chop bell peppers and onion; place in a medium bowl. Add beans, cilantro, lime juice, oil, garlic, salt and black pepper; mix well. Serve immediately or cover and refrigerate until ready to serve.
Nutrition information per serving: 40.9 Calories; 9 Calories from fat; 1g Total Fat (0.1 g Saturated Fat; 0.6 g Monounsaturated Fat;) 0 mg Cholesterol; 110.4 mg Sodium; 6.6 g Total Carbohydrate; 2.2 g Dietary Fiber; 1.9 g Protein; 0.6 mg Iron; 0.4 mg NE Niacin; 0.1 mg Vitamin B6; 0 mcg Vitamin B12; 0.2 mg Zinc; 0.5 mcg Selenium; 7.2 mg Choline.