Cool on wire racks. Repeat procedure with remaining dough. Raspberry Sandwich Cookies: Spread uncoated side of each solid cookie with a thin layer of raspberry preserves. (Cookies are very delicate and must be handled carefully.) Lightly dust almond side of doughnut-shaped cookies with powdered sugar, if desired; place sugar side up on top of CHOCOLATE SANDWICH COOKIES: Using half of reserved cookie centers, spread a thin layer of melted chocolate on side without almonds. Top with remaining cookie centers, almond side up. Drizzle tops of cookies with remaining chocolate, ----