Combine Ingredients. In a large mixing bowl, combine the creamy peanut butter, protein powder, honey or maple syrup, and a pinch of salt. Stir until the mixture becomes well combined and forms a thick, dough-like consistency.
Add Optional Mix-Ins. If you're using chocolate chips or shredded coconut (or any other mix-ins of your choice), fold them into the peanut butter mixture until they're evenly distributed.
Shape the Balls. Take small portions of the mixture and roll them between your palms to form bite-sized balls. You can make them as big or small as you like. Place each ball on a parchment paper-lined tray or plate.
Chill. Once all the balls are shaped, place them in the refrigerator for about 15-20 minutes. Chilling helps them set and become firmer.
Enjoy! Once the protein peanut butter balls have chilled, they're ready to enjoy. Store any leftovers in an airtight container in the refrigerator for longer shelf life.