It took my mom some time to perfect this chocolate chip cookie recipe. She was determined to not have any hard or burned cookies. She tried all kinds of tips that she had been given from friends and co-workers. Such as making the cookie dough the night before and letting it sit in the fridge over night before baking, etc. One day she finally figured out what worked for her. Essentially it is the Nestle Toll House recipe with two minor tweaks that make this cookie soft, chewy and all around good. Even the next day it is still SOFT and not hard as some cookies tend to get. The small changes that are made make for a thicker better cookie, give it a try.