Extremely easy and fast to make. By the time they're out of the oven, they will disappear!
With an electric beater, mix together the butter or margarine and the confectioners' sugar.
Sift together the flour and the corn starch and mix in gradually in the butter mixture. Add the chocolate chips.
Shape dough into little balls of approximately 1 1/4 inch in diameter. Put on a non-greased cookie sheet. Bake at 330 degrees F (170 degrees C) for approximately 20 minutes.