If you don't eat grain free, you can omit the almond flour + coconut flour and substitute with 1/2 cup bread crumbs. (laurafuentes.com)
Another minor detail: not everyone eats grain free or gluten free, so I didn't want a cake that was going to look and taste like cardboard. (laurafuentes.com)
Some paleo followers say they struggle with digestive issues when eating grains, gluten, legumes or dairy. (8fit.com)