Preheat oven to 375.  In a mixing bowl combine the flour, and baking powder.  Set Aside.

In another bowl or stand mixer beat the butter and sugar together.  Add the egg, stir to combine, add the vanilla.  Slowly add the flour mixture.

Separate the mixer into 3 even parts.

Return one of the sections to the mixer.  Add 1 tsp. of milk and 1/3 tsp. of Kool aid in your choice of flavor.   Stir to combine, add 1-2 drops of similar food coloring only if the color is not vibrant enough.  Wrap in plastic wrap or small Ziploc bag in fridge for 1 hour.

Remove dough from fridge on a sheet of parchment paper, roll out your dough until about 1/4 inch thick.  Cut dough a cookie cutter and place on a parchment lined baking sheet.  Bake at 375 for about 11-12 minutes.   Makes 2-3 dozen.