Question: How do I incorporate vanilla protein powder into my chocolate chunk muffin recipe?

March 24, 2014 This is the recipe for my muffins and I have a lot of vanilla protein powder leftover from a homemade protein bar mix I made. I was wondering if it's possible to include this protein powder into my muffins somehow. Would I have to substitute it for some other ingredient or just add it to the mix? Thanks!! :)