1
Preheat oven to 350 F. Grease a 9x13 inch baking dish with a little coconut oil or organic butter.
2
Combine dry ingredients (oats through brown sugar) in a large bowl.
3
In a separate bowl, combine the wet ingredients (Greek yogurt through coconut oil).
4
Mix the wet ingredients into the dry ingredients until thoroughly combined, and then mix in the chocolate.
5
Taste a little of the homemade protein bar mixture. Is it tasty? You can add more peanut butter or the optional nuts at this point if you like. Is it sweet enough? If not, you can add some additional sweetener or some of the optional dried fruit. Now is also the time to add in the protein powder if you are going to use it. Mix well using very clean hands (warning--it will be sticky!)
6
Spread the mixture into your prepared dish and bake for 15 minutes. Take the pan out of the oven, let them cool a little, and then slice the bars as you desire. Your homemade protein bars can be sliced into squares, or into the more typical bar shape you would purchase, if you prefer. Spread the bars out onto a cookie sheet and bake for 15 minutes more. Allow to cool, and then wrap and store in the refrigerator.