In a large bowl combine all the ingredients, except the chocolate chips. Mix well to combine, and once you have done that stir in the chocolate chips. Take the mixture and pour it into the pan and lightly press with a spatula to evenly distribute. Bake for 18 to 22 minutes or until golden brown. Let cool for at least 10 minutes. Then cut them into your desire portions but don't remove them from the pan until they are completely cool. You must cut them when they are still soft or they will be too hard later on. But if you remove them before they are cooled they will be too soft and just fall apart. You can put them in the fridge to help firm them up.