In a mixing bowl, stir peanut butter, maple syrup, and almond milk. The peanut butter will split into tiny pieces. That's ok.
Stir in the protein powder and quick oats until the batter sticks together and it's easy to roll into balls.
If it is too dry, add a bit more almond milk to bring it together.
Roll into 12 balls from about one tablespoon of batter each and place them in an airtight container in the fridge for up to 1 week.
Notes
Nut-free - swap peanut butter for sunflower seed butter. Replace almond milk with coconut milk, or soy milkGluten-free - use gluten-free certified oatsCan I freeze protein balls?Yes, you can place the protein balls in the freezer for up to 1 month in a sealed freezer bag.