Preheat oven to 350°F. Combine Ground Beef, bread crumbs, egg, minced onion, garlic, salt and pepper in large bowl, mixing lightly but thoroughly. Shape into twelve 2-inch meatballs. Place on rack in broiler pan. Bake in 350°F oven 25 to 30 minutes.
Heat 2 tablespoons water in large nonstick skillet over medium heat until hot. Add onion strips and bell pepper; cook and stir 4 minutes or until vegetables are tender. Add spaghetti sauce, basil and meatballs; heat through, stirring occasionally. Serve in rolls; sprinkle with cheese.
Nutrition information per serving: 486 Calories; 162 kcal Calories from fat; 18 g Total Fat; 6.4 g Saturated Fat; 0.1 g Trans Fat; 4 g Polyunsaturated Fat; 5.7 g Monounsaturated Fat; 137 mg Cholesterol; 1066 mg Sodium; 47 g Total Carbohydrate; 0.8 g Dietary Fiber; 31 g Protein; 6.5 mg Iron; 732 mg Potassium; 13.7 mg Niacin; 0.6 mg Vitamin B6; 3 mcg Vitamin B12; 7.1 mg Zinc; 29.3 mcg Selenium; 146 mg Choline;