wa-what? Sweet potato walnut with molasses? Oh, I can envision
  it. I'd skin the sweet pots, nuke them (faster), cut up, and put
  in my Ninja Kitchen with walnuts and molasses. the molasses
  should hold it together so I don't need an egg, and will give
  the "oilness" so it shouldn't need butter or oil. (pumpkin works
  as an oil substitute - so why not sweet potato?) -- Cast Iron
  skillet, on hot with healthy high oleic safflower oil - viola. "