Place the rolled oats in a bowl and soak them in milk.
Remove excess water from the silken tofu and cut it into bite-sized pieces.
Finely chop the onion and bell pepper.
Heat olive oil in a pan and sauté the onion and bell pepper.
Add the soaked oats, silken tofu, salt, and pepper, then mix together.
Transfer to an oven-safe dish and top with mozzarella cheese.
Bake in a 200°C oven for 15 minutes.