1 cup confectioners sugar (icing sugar or powdered sugar)
3 cups all-purpose flour
Instructions
Preheat oven to 325 degrees F. Line baking sheets with silicone mats or parchment paper.
In a large bowl using an electric mixer or wooden spoon, beat butter until smooth. Slowly add the icing sugar and beat until light and fluffy; then add flour and mix until just combined.
Place dough between two sheets of parchment paper and using a rolling pin, roll out to about ¼ of an inch thick. Cut into desired shapes.
Bake for 15 to 20 minutes, or until just done (pale golden in color). Let cool on pans on racks for 10 minutes and then transfer cookies to racks and let cool completely.