Whisk flour, baking powder and salt.
In large bowl beat butter, sugar until smooth
Add egg, milk and vanilla
Add flour mixture
Gather dough and divide in half.
Flatten into 2 disks and wrap in plastic wrap. Refrigerate 4 hours or overnight
.Heat oven to 350. Roll out cookie dough.
Place cut out cookie shapes on an ungreased baking sheet.
Bake at 350 for approximately 9 -10 minutes depending on oven.