1. For salsa, combine mango, apple, cilantro, lime juice, the 1 teaspoon sugar, and salt in a medium bowl. Cover and refrigerate up to 24 hours.
2. Heat grill or grill pan over medium-high heat.
3. Combine cumin, the 1/2 teaspoon sugar, the oil and pepper in a cup. Brush on both sides of steak. Grill ham 1 to 2 minutes per side, until heated through and grill marks are dark.
4. Top with salsa and serve with cooked rice, if desired. Makes 4 servings.