Beat butter and sugar ‘til soft and creamy.
Add flour very slowly but don’t over beat.
Turn out on floured board and knead very lightly until smooth.
Roll ¼ - ½ in. thick, cut into bars.
Prick top of bars with a fork.
Refrigerate at LEAST one hour.
Bake in 375° for 5 minutes, turn down to 325° for 30 minutes until golden brown.
When removed from oven, immediately sprinkle with a little sugar.
Enjoy!