In a large mixing bowl, combine the oats, peanut butter, dark chocolate chips, maple syrup, vanilla extract, sea salt, and protein powder if using.
Stir thoroughly with a wooden spoon until the mixture is evenly combined.
Line a baking sheet or tray with parchment paper.
Scoop small portions of the mixture and roll into balls approximately 1 to 2 inches in diameter.
Place the Healthy No-Bake Peanut Butter Bliss Balls on the prepared baking sheet.
Refrigerate for about 30 minutes or until firm.
Transfer to an airtight container and store in the refrigerator until ready to enjoy.