Slice the tofu into 1cm thick pieces.
Cut the vegetables such as onion, bell pepper, and broccoli into bite-sized pieces.
Heat olive oil in a pan and saute the onions and vegetables.
Season with salt and pepper, then remove the vegetables from the pan.
Grill the tofu on both sides until golden brown in the pan.
Place the grilled tofu in an oven-safe dish and top with the sauteed vegetables.
Generously sprinkle tomato sauce and mozzarella cheese.
Bake in a preheated oven at 180°C (356°F) for 10 minutes and it's ready to serve.