Add in each egg, on at a time. Mix in each egg completely before adding the next. The mixture should get lighter in color and thicker. You may need to beat on high for a minute or so to get everything well mixed. (2 eggs)
*For high altitude adjustments: decrease brown sugar to 2/3 cup, increase flour to 2 ½ cups
*Use the small box of instant pudding mix- they sometimes vary in sizes depending on the brand but you want a box that is between 3-4 oz.
*I use Hershey Bars because they break into nice little pieces so I can use two rectangles per cookie.