6Season with salt and pepper, then mix everything gently to combine.
7Mix tomato paste with water until smooth and pour it over the spaghetti.
8Sprinkle the grated cheese on top.
9Bake in a preheated oven at 180°C for about 30-35 minutes covered with foil, then uncover and bake for another 10 minutes until the cheese is golden and bubbly.