1In a large bowl, combine the flour, sugar 3/4 cup, baking powder, baking soda and salt.
2In another bowl, beat the yogurt, egg, 1/2 cup of melted butter, lemon peel and lemon juice 1 tablespoon, until smooth; stir into dry ingredients just until moistened. Fold in the 1/2 cup coconut.
3Fill greased muffin cups two-thirds full. Bake at 400 for 18-22 minutes or until golden brown and muffins test done. Cool for 5 minutes before removing from pan to a wire rack.
4In a saucepan, combine 1/3 cup lemon juice and 1/4 cup sugar; cook and stir until sugar is dissolved. Stir in 1/4 cup toasted conconut. Using a toothpick, poke 6-8 holes in each muffin. Spoon the coconut mixture over muffins. Serve warm or cool to room temperature.