Lemon Cookies

Ok, the truth be told, it was very hard to get these cookies to come out looking like this in humid weather, so if the crinkling is important to you, make them in winter.  You will be happier.  But if the cookie doesn't have to look perfect, this is a great summer cookie because they are so lemony it is refreshing.
 1 1/2 c. flour
1/2 tsp. baking powder
1/2 tsp. salt
1 1/4 c. sugar
4 tsp. grated lemon zest
2 Tbs. lemon juice
1 egg plus 1 egg yolk
4 Tbs. butter, melted
3 Tbs. vegetable oil
1 tsp. vanilla extract
1/2 c. confectionary sugar

1.  Whisk flour, baking powder, and salt together in a bowl.  Process sugar and lemon zest in the food processor until zest is finely ground (it will smell divine).  Add egg and egg yolk, butter, oil, vanilla and lemon juice and process until pale and thickened.  Stir egg mixture into flour mixture until incorporated.  Cover bowl with plastic wrap and refrigerate overnight.
2.  Heat oven to 350 degrees. Put confectionery sugar in a bowl.  Working with 100 scoop, scoop and roll balls in confectionery sugar to coat.  Space balls about 2 inches aprt.  Bake 10-12 minutes.  Let cool completely.