Coconut Sugar Cookie Squares Ingredients 1/2 cup shredded sweetened coconut 2 1/2 cups all-purpose flour 1/2 tsp baking powder 1/2 tsp salt 1/2 cup butter, softened 1 cup granulated sugar 1 egg 1 egg white 1 tsp vanilla extract 2 Tbsp coconut milk 1 Tbsp sour cream 1 recipe Coconut Buttercream Frosting, recipe follows