1. Preheat the oven to 350 degrees. 2. Beat butter with an electric mixer for 30 minutes at medium speed. Don't skimp on the time. The long beating is crucial. 3. Add the 1/2 cup powdered sugar, followed by the egg yolk and vanilla and continue beating so the sugar and egg yolk mix in well. 4. Add the cake flour a little at a time, then the regular flour, baking powder. 5. and vanilla. 6. The dough should be soft but not sticky to the hand. 7. Make sure you mix the dough well. 8. Roll the dough into 3/4 inch balls and make a small indentation on top to help hold the powdered sugar. 9. Bake at 350 for about 20 minutes. 10. Sprinkle with an ample ample of powdered sugar. The more the better. 11. Remove from the pan and place cookies on a board or rack to cool and sprinkle with more powdered sugar. 12. Let them cool before storing in a container. ---------------------------------------------------------------------------
Nutrition
Ingredients