Vanilla Sugar Cookies

Sift together flour, baking powder, and salt; set aside.
Beat butter and sugar until fluffy.
Beat in eggs one at a time, scraping down bowl each time, then add vanilla.
Add flour mixture and mix at low speed until dough just comes together.
Knead a couple of times just until smooth, then pat into a flat disk, wrap in plastic and chill until firm enough to roll.
Roll and cut as desired and place on parchment-lined sheets.
Bake at 350° for 8-10 minutes.