Alfajores de Maizena (Cornstarch Cookies)

I'm not a big fun of sweets, but this dessert is delicious! It's perfect to eat it with hot chocolate or coffee. In Uruguay it's very common that children help their mothers make these cookies since they are kind of fun to make and so easy

Ingredients
2 1/2 cups of corn starch
1 2/3 cups of flour
2 teaspoons of baking powder
3/4 cups of sugar
1 cup of butter
3 egg yolks
1/4 teaspoon of salt
1 tablespoon of vanilla extract
2 teaspoon of lemon zest
Dulce de leche (milk caramel)
1 bag of grated coconut

Directions
Preheat oven to 350° F. Place the butter in a medium bowl and put it in the microwave for 12 seconds. Then add the sugar gradually beating until the mixture is light and fluffy. Then add the egg yolks, one at the time and beating after each addition. Add the vanilla and lemon zest and continue beating until obtaining a smooth cream. Sift together the cornstarch, flour, baking powder and salt. Gradually add the dry ingredients to the butter mixture, beating thoroughly and making a dough. With a rolling pin extend the dough over a little bit of flour and until approximately 1/2 inch thick. With a cookie cutter, cut circles and the repeat all again with the remaining dough. Spread butter evenly into a baking sheet and place the cookies with enough space between one another because they will spread. Bake the cookies for about 15 minutes and let it cool for approximately 30 to 45 minutes. When cool, spread dulce de leche on the bottom half of the cookies and make a sandwich with other cookie.

Squeeze the sandwiches so that some of the dulce de leche is squeezed outsides. Grab a medium size plate and put some of the grated coconut and roll the sides of the "sandwich" into the coconut.