Line an 8 x 8-inch baking dish with parchment paper and set aside.
Add the almond butter, vanilla protein powder, oat flour (or Medjool dates if using), and water into a food processor.
Process until the mixture comes together into a thick, cookie-dough–like consistency, stopping to scrape down the sides as needed.
Fold in the chocolate chips by hand with a spatula until evenly distributed.
Transfer the mixture to the prepared pan and press firmly and evenly into the pan.
Refrigerate for at least 1 hour to firm up, then remove and slice into 12 bars.