Add all the ingredients to a bowl and mix until everything is evenly distributed.
Transfer into a loaf tin (I used a 21x11cm loaf tin) and press down using a spatula.
Break up the chocolate into a heat-proof bowl and add the coconut oil. Melt in the microwave or over a pan of simmering water.
Pour the chocolate on top, then refrigerate until set (1-2 hours).
Slice into bars and enjoy!
Notes
* From my experience, whey protein powder doesn't work as well when making no bake protein bars. It creates a sticky mixture that's difficult to work with, so I would suggest using vegan protein powder here. Store in an air-tight container at room temperature or in the fridge or up to 4 days. You can store leftovers in the freezer.