Preheat oven to 375 degrees F
Mix together the flour, baking soda and baking powder in a small bowl
In a large bowl, beat the sugar and butter together until smooth
Beat in the egg and vanilla.
Gradually blend in the flour mixture
Roll the dough out into one large sheet (for cookie cutters) or into small balls for round cookies.
Place cookies a couple of inches apart on ungreased baking sheets
Bake until golden, roughly 8 to 10 minutes.
Cool on the baking sheets for a couple of minutes before removing to a wire rack or plate to cool completely