I based this on "Yamaimo Teppan" (yamaimo yam cooked on an electric griddle) served at izakaya gastropubs. I made this healthier by bulking it up with tofu instead of eggs. The fluffy texture comes from using grated nagaimo yam and silken tofu. I flavored the recipe lightly.
Grate the nagaimo yam into a bowl and add the tofu chopped into large bite-size pieces.
Add shiro-dashi and mayonnaise and mix.
Try not to break up the tofu too much.
Put the mixture from Step 1 into a heatproof dish, sprinkle cheese on top and bake in an oven preheated to 355ºF/180ºC (on the top rack). Bake for about 20 minutes.
Story Behind this Recipe
I stopped going out to pubs and bars recently... I had a craving for my favorite dish my favorite one used to serve, called "Yamaimo Teppan", but I didn't have an electric griddle at home... So I made something like it at home using my imagination. Be warned, it's just my imagination!
The cooking time will vary depending on your oven, so cook it until it browns nicely. It was still nice and gooey after reheating in the microwave, but I recommend eating this fresh from the oven. I think this would go well with soy sauce.