Transfer the oats to a food processor and blend them to chop them finer.
Add the remaining ingredients for the peanut butter layer to the food processor. Process until a thick dough forms.
Press the peanut butter mixture into a parchment-lined 8-inch square pan, creating an even layer.
Microwave the chocolate chips and butter in a microwave-safe bowl for 20-second intervals, stirring well in between each interval, until melted (about 60-80 seconds total).
Spread the melted chocolate mixture over the peanut butter layer evenly.
Refrigerate for at least 30 minutes, or until the chocolate has set up.
Pull on the parchment paper to release the whole batch from the dish and transfer to a cutting board. Use a sharp knife to cut the protein bars into individual portions. Enjoy!
Store protein bars in a zip lock bag or an airtight container in the refrigerator for up to 10 days.
Notes
*You can omit the vanilla extract if you’re using a vanilla flavored protein powder.**If you’re omitting the protein powder and using more almond flour, reduce the water to 2 tablespoons unless more water is needed for blending.