Slice off the sides of the mango, avoiding the large seed in the middle. Cut a checkerboard pattern in the mango flesh, stopping just short of the skin. Scoop out diced mango and place in a bowl.
In a small bowl, combine yogurt, honey and cinnamon. Add diced mango to yogurt mixture. Spoon equal parts into each half. Sprinkle with granola.
Nutritional analysis per serving: Calories 421; Protein 23 g; Carbohydrates 88 g; Fat 2 g; 3% Calories from Fat; Cholesterol 10 mg; Sodium 130 mg; Potassium 596 mg; Fiber 13 g