Finely chop the onion and green onion.
Heat olive oil in a pan and sauté the onion and green onion.
Dice the chicken breast and cook it in the pan.
Add the soft tofu to the pan and sauté, breaking it apart.
Season with salt and pepper.
Transfer to an oven-safe dish and top with cheese.
Bake in a preheated oven at 180°C for 10 minutes.