Finely chop cabbage and carrots.
Beat the eggs and mix with the chopped vegetables, okonomiyaki sauce, salt, and pepper.
Heat oil in a pan and place the batter in one mound.
Cook on medium-low heat until golden brown on both sides.
Drizzle mayonnaise and okonomiyaki sauce on top.
Finish by topping with bonito flakes and chopped green onions.