Preheat oven to 375° F. Arrange bread slices on two baking sheets. Bake 8 to 10 minutes or until golden brown. Brush toasted side with butter. Turn oven setting from bake to broil. Stir together 3 Tbsp. sugar and cinnamon. Sprinkle evenly over buttered toast. Broil slices about 6 inches from heat until tops are bubbling, about 20–30 seconds. Remove from broiler; cool slightly. Stir together mango, banana, pineapple, and dates in bowl with remaining 1 Tbsp. sugar. Sprinkle each slice with nuts and, if desired, drizzle with honey. Spoon about 1 Tbsp. mango mixture on each slice. Transfer to serving platter. Garnish with fresh mint, if desired. Serve any remaining fruit in a bowl. Makes 24 servings.