Wash the cabbage and shred it thinly.
Slice the onion and carrot thinly.
Heat cooking oil in a pan, then stir-fry the cabbage, onion, and carrot over medium heat.
Once the vegetables have softened, season with salt and pepper.
Sprinkle mozzarella cheese on top, cover with a lid.
Once the cheese has melted, transfer to a plate and serve.