Date Marinade and Spread:
Place Date Marinade and Spread ingredients in food processor container. Cover; process until smooth. Cover and refrigerate 1/2 cup for spread. Place beef Top Round Steak and remaining marinade in food-safe plastic bag; turn steak to coat. Close bag securely and marinate in refrigerator 6 hours or as long as overnight, turning occasionally.
Combine Slaw ingredients in medium bowl; mix well. Set aside.
Remove steak from marinade; discard marinade. Place steak on grid over medium, ash-covered coals. Grill, covered, 10 to 11 minutes (over medium heat for preheated gas grill, times remain the same) for medium rare (145°F) doneness, turning occasionally. (Do not overcook.)
Carve steak into thin slices. Spread 1 tablespoon reserved Date Spread on each lettuce leaf. Top evenly with steak slices and slaw. Sprinkle with mint, as desired. Roll up.
Nutrition information per serving: 364 Calories; 135 kcal Calories from fat; 15 g Total Fat; 3 g Saturated Fat; 1 g Monounsaturated Fat; 61 mg Cholesterol; 413 mg Sodium; 32 g Total Carbohydrate; 3.1 g Dietary Fiber; 29 g Protein; 3 mg Iron; 5.3 mg NE Niacin; 0.5 mg Vitamin B6; 1.5 mcg Vitamin B12; 4.9 mg Zinc; 31.6 mcg Selenium;