In medium bowl sift together flour and baking soda.
Cream together butter, oil, and sugar.
Add eggs and vanilla until combined.
Gradually add flour mixture to wet mixture.
Stir in chocolate chips.
At this point, you can either separate recipe into 3rd's and freeze some of the dough in rolls for later use or cook immediately drop by spoonful (i make them big) on parchment lined baking sheets and slightly flatten with a spoon.
Bake for 7-10 minutes or until lightly golden.
Allow to cool.
To use frozen rolls, allow to thaw in refrigerator, slice and follow normal directions.