Combine flour blend, baking powder and salt in a bowl and set aside.
Beat sugar and butter in a large bowl with electric mixer for 2 to 3 minutes until creamy. Add egg and vanilla, and continue mixing until well blended. Add dry ingredients and mix on low speed for 1 to 2 minutes or until a smooth dough forms.
Transfer dough onto plastic film, flatten into a disc, wrap tightly and refrigerate for 30 minutes or until very firm.
Preheat oven to 375˚F.
Roll dough into 1-inch balls and arrange 3-inches apart on an ungreased baking sheet. Flatten slightly to 1/2-inch thickness using a glass that has been dipped in sugar.
OR divide dough into 3 portions; refrigerate 2 of the portions. Roll one portion of dough into a circular shape that is about 1/4-inch thick. Use favorite cookie cutters to cut out shapes. Place cookies on baking sheets that have been sprayed with cooking spray. Repeat with remaining dough.
Bake for 9 to 10 minutes or until firm in center and light brown in color. Remove from oven and cool on baking sheet for 2 to 3 minutes. Remove to cooling rack to finish cooling.
Decorating Ideas: Sprinkle cookies with colored sugar or sprinkles before baking. Or frost or drizzle after baking and decorate as desired with colored sugar or sprinkles.