Preheat oven to 350 degrees F (185 degrees C). Grease cookie sheets.
In a large bowl, cream together the butter flavored shortening, brown sugar and white sugar until light and fluffy. Add the eggs one at a time, beating well with each addition, then stir in the vanilla.
Combine the flour, baking soda and salt in a medium sized bowl. Gradually stir the flour mixture into the creamed mixture. Finally, fold in the chocolate chips.
Drop by rounded spoonfuls onto the prepared cookie sheets. Space generously because they do expand quite a bit.
Bake for 8 to 10 minutes in the preheated oven, until light brown. Allow cookies to cool on baking sheet for 5 minutes before removing to a wire rack to cool completely.