Line an 8x8 pan with parchment paper and set aside.
Combine the oats, nut butter and dates in a food processor and process until clumping together almost like a dough.
Add the protein powder, milk, chia seeds, maple syrup, vanilla and salt. Continue to pulse until everything is mixed together. It will be processed enough when you can squeeze a small bit of the mixture and it stays clumped together.
Transfer the mixture to a bowl and add the mini chocolate chips. Mix together by hand.
Spread the mixture into the prepared pan in an even layer. Use a flat bottomed measuring cup to press it into an even layer.
Cover and refrigerate for at least one hour before slicing into 12 equal bars.
Store leftover protein bars in the refrigerator in an airtight container until ready to consume.
Notes
If you prefer finer oats, you can process the oats alone until they are powder before adding the nut butter and dates.
Feel free to add nuts or seeds to customize the flavor of these bars.
If you use vanilla protein powder, reduce or eliminate the vanilla extract.
To store: Your homemade protein bars can be stored in an airtight container in the refrigerator for up to 2 weeks.
To freeze: Wrap each bar separately in parchment paper or plastic wrap to prevent them from sticking together. Place them in an airtight container or freezer bag and freeze for up to 3 months. When you're ready to enjoy one, remove it from the freezer and let it thaw for a few minutes at room temperature.