Well, these are kind of my faves. My family goes crazy for them, and they are requested multiple times per week. It's awesome too, because they are so darn healthy that I don't mind accommodating the requests at all. We eat them for breakfast, lunch and supper...often. The amount of sweet potato I use varies greatly, depending on the size of sweet potato I'm using, or what I happen to have on hand. I've used anywhere from 2-5 cups of sweet potatoes (cooked) and always get awesome results. I started out using 1/2 a large sweet potato per batch, but lately I use the whole thing and they turn out the same as far as cooking time and consistency, I just get the satisfaction of knowing I'm packing more nutrients into each waffle and the batter ends up stretching farther and tasting a little more sweet and flavourful. BONUS! So here's how it's done... Combine sweet potato, apple sauce, plant based milk & honey in a high speed blender.