A good recipe for Valentine's day cookies is Dried Cranberry Shortbread Hearts. More recipes include Chocolate Heart Sandwich Cookies, Conversation Heart Cookies, Pecan Linzer Cookies with Cherry Filling and Pink Heart Tuiles.
To make dried cranberry shortbread hearts, cream together 1 cup of softened unsalted butter and 3/4 cup of sifted confectioners' sugar. Mix in 1 teaspoon of pure vanilla extract, 2 cups of sifted all-purpose flour and 1/2 teaspoon of salt until the dough is just blend. Fold in 1/2 cup of finely chopped dried cherries or cranberries. Spoon the mixture into a square baking pan, pressing down the dough so that it is a solid cookie layer between 1 1/2 and 2 inches thick.
Bake the cookie layer at 325 degrees Fahrenheit for 20 minutes. Once the pan cools a little, remove the cookie layer onto a work surface by carefully running a knife along the edges of the pan. Cut the cookie into heart shapes using a cookie cutter, and allow them to finish cooling.
Another good recipe is conversation heart cookies that call for flour, butter, sugar and eggs. Cut basic sugar cookie dough into heart shapes, and then frost them with royal icing. Write messages on the cookies using stamp letters and gel-paste food coloring.