Recipe by: The Joy of Cookies Buttery shortbread laced with coconut and dipped into dark chocolate. Combine flour, baking powder, salt; set aside. Beat together butter, sugar and vanilla until light and fluffy. Stir in four half cup at a time and mix until well-blended. Stir in coconut. Form dough into a 10 cm x 18 cm rectangle. Wrap and refrigerate until firm, 2 hours. Preheat oven to 300. Butter two large baking sheets. On floured surface, roll dough into an 8by 36 cm rectangle about 1 cm thick. Using floured knife with long blade, cut into 24, 5 cm squares. Arrange squares, 3 cm apart, on buttered sheets. Bake 25-30 minutes until golden. Cool on racks. Line 2 large baking sheets with waxed paper, set aside. Melt chocolate and butter together, stirring to blend well. Dip half of each cookie diagonally into chocolate, shaking off excess. Arrange on paper-lined sheets. Refrigerate until chocolate sets, about 10 minutes. Store airtight at room temp or freeze longer.