Your butter was likely too warm. Room temperature does NOT mean room temperature of your kitchen. It means 65 degrees, and I can assure you I don’t keep my home cooled that low. Would suggest you test your butter’s temp with an instant read meat thermometer. Chill the dough for less than 3 hours, and definitely buy a good quality oven thermometer so you can calibrate your oven temperature if needed. I have made these numerous times, following all the above suggestions, and they always turn out fabulous. So don’t blame the recipe.

Hi Deborah, we have a chocolate chip cookie recipe for everyone! Here’s our crispy chocolate chip cookies recipe.

Hi Vanessa, How did you measure the oats? Make sure to spoon and level (instead of scooping) to avoid packing in too many oats into your measuring cups – or use a kitchen scale. You can read more about properly measuring baking ingredients in this post.