For the Mango Dressing, process mango in blender or food processor until pureed (about 1 cup puree). Add lime juice, oil, garam masala, salt and red pepper; process until smooth. Refrigerate until ready to serve.
For the Shrimp Tandoori Salad, mix 1/4 cup of the mint, lime juice, 2 tablespoons of the oil, honey, garam masala, ginger, salt and red pepper in small bowl. Thread shrimp onto skewers. Brush with mint mixture. Thread mango onto skewers. Brush with remaining 1 tablespoon oil.
Grill shrimp skewers over high heat 4 to 5 minutes or just until shrimp turn pink, turning once and brushing occasionally with mint mixture. Grill mango skewers 4 to 5 minutes or until lightly charred.
Arrange greens, tomatoes and onion on 6 serving plates. Top with grilled shrimp, mango and remaining 3 tablespoons mint. Drizzle with 1/2 of the Mango Dressing.