Beat butter until light and fluffy, about 1-2 minutes. Add in brown sugar and white sugar and beat until combined. Add in egg, vanilla extract, and salt. Mix.
In a separate bowl, mix flour, vanilla pudding, baking soda, and espresso powder. Slowly incorporate the dry ingredients into the wet ingredients.
Once combined, add in the chocolate chips and crushed Oreos; mix.
Chill the dough for 20-30 minutes, just to firm it up slightly.
Preheat the oven to 350 degrees and grease 2 cookie sheets.
With a medium cookie scoop (about 2 Tbsp of dough per cookie), scoop the dough and spread evenly on the cookie sheets, about 2 inches apart.
Bake for 15-16 minutes, or until the cookies are slightly golden brown.
Enjoy!