Best Cookies I have ever had
Flour and rolled oats supply essential starches and insoluble fiber that absorb free water during dough formation, preventing excessive spreading in the oven. Incorporating a dry vanilla pudding mix introduces modified food starches and additional sugar, which bind free moisture tightly and lock in a soft interior crumb that resists staleness over several days. Baking soda reacts with acidic components present in brown sugar and the pudding mix, releasing carbon dioxide gas to provide a subtle upward lift without compromising the dense, substantial mouthfeel expected from an oatmeal cookie.
Standard aluminum baking sheets conduct heat rapidly, meaning dark-colored pans require lowering the oven temperature by 25 degrees Fahrenheit to prevent premature burning on the bottoms before the centers set. Dropping the dough by rounded teaspoonfuls onto ungreased surfaces allows the fat rendered from the butter to interact directly with the metal, creating optimal frying conditions for lacy, caramelized edges. Removing the batches immediately upon reaching a light golden brown color at 375 degrees Fahrenheit halts residual carryover cooking, ensuring the interiors remain tender as the structure cools on wire racks.