Heat some oil in a pan.

Cut the peppers, put them in the pan and cook it covered for 10 minutes.

Add the diced tomatoes.

Cover it for 5 minutes, then add the mushrooms, salt and pepper.

Cook it thoroughly and put some garlic and basil in it (optional).

Add the tomato sauce and cook it thoroughly.

Now comes the precooked pasta. Mix it in the sauce well.

Put the mozzarella on top and cover it so it melts.

Good luck with the preparation and bon appetit!