Just mix everything together and bake! There's no need to rehydrate the kurumabu, so it's very simple. This is a healthy macrobiotic gratin with plenty of fiber.
I've been eating okara a lot recently. This time I made a side dish with it, instead of cake which I usually make.
I didn't add mixed beans to the ingredients list, but I added them in Step 1 and cooked with other ingredients. The texture of kurumabu is very nice.
Enjoy Japanese food around the world.