I made these today. I made them gluten free by using 1/3 cup white rice flour, 1/2 teaspoon of xantham gum, and about 1/6 cup each of sorghum flour and tapioca flour. Ive read that you can use just about any pre-made gluten free mix flour too.
In Japan, these are called okonomiyaki. Which I’ve heard means something along the lines of “made how you like it.” So, feel free to throw in any veggies or meats that you like. I used cabbage, scallions, carrot, and parsley. It was delicious!!