|Mix powdered sugar, sugar, butter, eggs, vanilla and oil. |
Sift flour and baking soda together. Fold into butter and sugar mixture. Cover tightly with plastic wrap and chill in refrigerator overnight.
Roll a teaspoon of dough into a ball. Place 2" apart on greased cookie sheet, flatten slightly with a glass dipped in sugar. May color sugar if desired. Bake at 350Â° for 8-10 minutes.