Combine flour and confectioners' sugar and butter in a food processor.Pulse until crumbly. Press onto the bottom of a lightly greased 13-in. x 9-in. x 2-in. baking pan. Bake at 350 degrees F for 15 minutes
Meanwhile, in a mixing bowl, beat the eggs, sugar, lemon juice, and baking powder until well mixed. Pour over crust; sprinkle coconut evenly over the top. Bake at 350 degrees F for 20-25 minutes or until golden brown.