In a large mixing bowl combine your Devil's Food Cake Mix, butter, eggs, flour, vanilla extract & Hershey's Chocolate Chips. The batter might be sticky and it's kind of hard to mix but just keep mixing until everything is combined well.
Make little cookie balls (about 1 tablespoon each). Sprinkle Reese's Pieces & peanut butter chips on a plate and press each cookie ball down to make them stick really well.
Place on a parchment lined cookie sheet and bake in the oven for 8 minutes at 350°
** I baked the first batch for 10 minutes and they came out a little too hard. I think's it better to undercook them just a bit so they stay soft! **