You'll surely win hearts with these confectionery valentines: sugar-cookie lollipops embedded with candy hearts or layered into frosted sandwiches. Using a tiny cookie cutter, make heart-shaped cutouts into unbaked round cookies (bottom, left), and press lollipop sticks into the underside of the dough. After baking, let the cookies cool on the pan. Then, fill the hearts with hot sugar syrup (bottom, right); the syrup will harden as it cools. (Use caution around sugar syrup when it's hot.) For sandwich cookies, position lollipop sticks between pairs of baked cookies, and join with filling. Meanwhile, bake the cut-out hearts; use frosting to glue them onto the sandwiches. Decorate with royal icing.