Toss potato and vegetables with 1/4 cup dressing; set aside. Rub beef Steaks with garlic and pepper.
Place steaks on grid over medium, ash-covered coals. Arrange vegetables around steaks. Grill steaks, covered, 7 to 10 minutes (over medium heat on preheated gas grill time remains the same) for medium rare (145°F) to medium (160°F) doneness, turning occasionally. Grill lettuce and asparagus 2 to 4 minutes; grill other vegetables 11 to 15 minutes or until crisp-tender, turning occasionally.
Carve steaks and vegetables into bite-sized pieces. Combine beef, vegetables and remaining 1/4 cup dressing in large bowl; toss to coat. Season with salt and pepper, as desired.
Nutrition information per serving: 291 Calories; 81 kcal Calories from fat; 9 g Total Fat; 3 g Saturated Fat; 3 g Monounsaturated Fat; 69 mg Cholesterol; 384 mg Sodium; 24 g Total Carbohydrate; 5 g Dietary Fiber; 29 g Protein; 4 mg Iron; 13.3 mg NE Niacin; 1.1 mg Vitamin B6; 1.4 mcg Vitamin B12; 5.5 mg Zinc; 31.3 mcg Selenium; 123.4 mg Choline;