Cut the soft tofu into bite-sized pieces.
Finely chop the onion and bell pepper.
Cut the bacon into bite-sized pieces.
Heat olive oil in a pan and sauté the onion, bell pepper, and bacon.
Add the soft tofu to the pan, gently mash it, and season with salt and pepper.
Make béchamel sauce or pour in store-bought sauce.
Transfer everything to a gratin dish and top with mozzarella cheese.
Bake in a 200°C oven for 10-15 minutes until the cheese turns golden.