* In a mixer fitted with a spatula beat together the butter and sugar until soft.
        * Add the vanilla, orange extract, grated rind and the egg yolks. Continue mixing until forms smooth dough.
        * Add the flour and mix until fully incorporated.
        * Transfer the dough to a plastic wrap and place in the refrigerator for about one hour.
        * Preheat oven 325 F (165 C). Remove the dough from the refrigerator and cut it in 4 pieces. Place one piece on a work board and return the rest to the fridge.
        * Flatten the dough to about 3/16 (5 mm) thick.
        * Cut the dough using a cookie cutter with a heart shape. 
        * Transfer the cookies to a pan and repeat the step with the remaining dough.
        * Bake the cookies for about 20 minutes, or until light golden. 
        * While the cookies cool down prepare the filling and the topping.
        * Place in a small saucepan the orange jam, grated orange rind, and liquor. Turn heat to medium and bring to a boil until slightly thicker.
        * Place 1 teaspoon of the orange filling on half of the cookies. * Top with the remaining cookies. 
        * To make the chocolate topping, mix together in a saucepan the water, corn syrup, and sugar. Bring to a boil, remove from the stove, and add the diced chocolate. Stir occasionally to melt the chocolate. 
        * Using a whisk or a spoon drizzle the glaze over the cookies.
        * Serve soon, possibly the same day they are prepared.
        
 
    
        for the dough
        * 8 oz or 2 sticks (220 gr) unsalted butter
        * 3 1/2 oz (100 gr) sugar
        * 1 teaspoon vanilla
        * 1 teaspoon orange extract
        * 1 teaspoon grated orange rind
        * 2 egg yolks
        * 2 1/2 cups (350 gr) cake flour, sifted
        
        for the filling
        * 5 tablespoons (100 gr) orange jam
        * 1 orange rind grated and juiced
        * 1 tablespoon Grand Marnier
        
        for the chocolate topping
        * 2 tablespoons water
        * 2 tablespoons light corn syrup
        * 2 1/2 oz (75 gr) sugar
        * 3 oz (100 gr) semi-sweet chocolate, diced