Cream together butter and powdered sugar.
Add the egg, vanilla, and lemon flavors.
Add in the flour, baking powder, and salt and sprinkles.
Mix until the dough is well blended and smooth.
It will pull away from the sides of the mixer bowl.
Roll out the dough between wax paper sheets for 1/4 inch thick and cut with a cookie cutter.
Bake at 400° for 7-8 minutes.