To begin making the Lemon Cookie Recipe, sift together the flour, corn flour and salt and keep aside.

In the bowl of your stand mixer with the paddle attachment, cream the butter, castor sugar and vanilla until light and fluffy. Add in the lemon juice and vanilla. Continue next to add the flour mixture and beat until all the ingredients are well combined. Once the ingredients are well combined, add the lemon rind and beat for a few more minutes. 

Scrape the sides of the bowl and make a ball with the dough. Divide the cookie dough into two portions and form cylindrical logs of 1.5 inch diameter. Wrap the logs in clingfilm and place in the refrigerator to chill and firm for at least for one hour.

Preheat the oven to 180 C. Prepare the baking sheet by lining it with parchment paper.

Once chilled, remove the logs and place them on a floured surface. Cut them into 1/4 inch thick rounds and place each round on your prepared baking sheet. Make sure you space them 1 inch apart to give them enough room to spread while baking. 

Place the baking sheet into to the oven and bake the lemon cookies for about 15 minutes or until they are firm and edges are golden.

Remove from the oven and let the lemon cookies sit on the baking sheet for a few minutes, they cook a little more while sitting on the heat. Gently transfer them to wire racks to cool completely.

Once cooled completely dip the Lemon Cookies in confectioners sugar and store them in airtight containers and serve them with your cup of coffee or green tea.