Add the brownie mix, pudding mix, melted butter, and eggs in a large bowl.
Use an electric mixer to combine the ingredients.
Use a rubber spatula to stir in the chocolate chips. Put the covered bowl of cookie dough in the refrigerator for 30 minutes.
With a large cookie scoop, scoop the chilled cookie dough into a ball.
Roll the cookie ball in the bowl of powdered sugar.
Place the dough on the lined cookie sheet. (Place the cookies 8 inch apart. ) Bake at 350 degrees for 15-20 minutes. (The shorter time for chewy cookies and the longer time for a cake like cookie.)
Once baked, remove from the oven.
Set the cookie sheet aside to cool the cookies for 2-5 minutes.
Carefully take the baked cookies off of the cookie sheet and place on a wire rack to cool completely.