1.    To prepare the crust: In a bowl, combine flour, 1/3 cup of the coconut and the baking powder; stir until blended.  Using a pastry blender, cut in butter until coarse crumbs form.  Mix in 2 tablespoons water; knead mixture to form a dough.  Wrap in plastic; chill at least 30 minutes. 
2.    Preheat oven to 400ºF. On a lightly floured surface, divide dough into 6 equal pieces; roll each into a 4-inch circle.  Place pastry in six 3-inch tartlet pans.  Prick bottom crusts; bake 10 minutes. Cool on a wire rack. 
3.    In a bowl, combine condensed milk, eggs and the remaining 1 cup coconut.  Stir in blueberries.  Spoon about 1/3 cup mixture into each shell.  Bake until filling is set, about 25 minutes. Sprinkle with shredded coconut and serve with mango sorbet, if desired.

Yield : 6 portions