1. In a large bowl mix the flour, sugar, salt and baking powder.
2. Cut the butter into pieces and add it to the flour and mix it into the flour. It is better if the butter is at room temperature. I just use a big fork to mix it.
3. Once the butter is been reduced to small pieces in the flour add the egg, two egg yolks and the vanilla. Mix it together until it the dough holds together.
4. Wrap it in plastic wrap and put it in the refrigerate for one hour.
5. Roll out the dough on a well floured work area to a thickness of about 1/4 inch.
6. Cut the the dough with your favorite cookie cutters and lay them on cookie sheets greased with butter or use oven paper to avoid the butter. Of course you can cut them in rectangular shapes if you prefer.
7. Bake in a preheated oven at 325° for 20 minutes or until they start to turn slightly golden in color.
8. Once they've cooled dust them with powdered sugar and serve.
