I followed a basic chocolate chip recipe using two teaspoons of vanilla and one egg. I don't see many other variations. I did add one cup of oats, which I often do and did add almost two full cups of chocolate chips. I often only add one cup, but my helpers vetoed that idea.
I baked 10 minutes at 375 degrees and these have a very nice texture. The banana and butter variation seems more cakey. Banana only (no added fats) are very cakey. I think we will stick with the coconut oil. As my daughter said, coconut oil is good for everything! Even my feet!