180°C for 25 minutes
Slice potatoes and onions thinly.
Cut bacon into bite-sized pieces.
Add bacon to a pan and stir-fry over medium heat.
Add sliced potatoes and onions to the pan and stir-fry together.
Season with salt and pepper.
Sprinkle mozzarella cheese on top.
Cover with a lid and cook over low heat until the cheese melts.
Transfer the finished dish to a plate and serve.