Line a brownie pan and preheat oven to 180 degrees celsius
Combine all ingredients above in a bowl, depending on the brand of protein powder used, you may need to add more or less milk. Mixture should form a dough, and not be too runny
Press dough into the lined brownie pan and bake for 8-10 mins. Bars should look slightly underdone.
Take out and allow to cool, before slicing into desired shape.
Store in an airtight container in fridge or freezer!