Preheat the oven to 350 degrees. Stir together the peanut butter, sugar, cocoa powder and egg. Add the chocolate chips and stir to combine. Scoop onto a parchment or silpat lined baking sheet. (Roll into
1" balls with your hands, if you do not have a scoop.) Press down with
the back of a fork and then press again from the opposite direction, to
form the crisscross pattern on top.
Bake for 12 minutes and then let cool on
the tray for 1-2 minutes before removing to a wire rack to finish
cooling. Store in an airtight container. Enjoy!