This was absolutely delicious. I found I needed a little extra seltzer to get the right consistency, and I accidentally added the olive oil to the batter along with the butter and it still worked just fine.
I topped with a peanut/cashew sauce (water, peanut butter, raw cashews, garlic, ginger, Bragg's amino's, rice vinegar, a little agave syrup or sugar to taste) and it worked very well on it. I also threw in some leftover steamed broccoli to stretch the recipe a bit and it worked fine. You could stretch this with cannellini beans too. I served with quinoa. Yummy.