Preheat the oven to 300 degrees F
In a bowl, blend together the butter, shortening, brown sugar, granulated sugar, vanilla, and eggs.
Once those are well incorporated, pour in the banana pudding dry mix, baking soda, and salt. Blend together.
After those have been mixed, add flour a little bit at a time until it is well mixed.
Next, pour in the chopped vanilla wafers. Fold those in the batter with a large spoon.
On a greased cookie sheet, scoop the dough to form balls into 1 ½-2 inch balls, or you can use a cookie scoop.
Bake each cookie sheet at about 8-9 minutes.
When cooked, remove each cookie from the pan and place on a cooling rack.