For the Italian tomato sauce
please see link below:
www.freja-thecat.com/italian-tomato-sauce-salsadipomodore
Heat up the oven to 200°C
Mix the spinach, ricotta and parmesan and season with salt and pepper
Butter in an ovenproof form
Fill the spinach-ricotta mixture in all pasta pipes
Put the spinach-ricotta filled pasta pipes in one layer in the dish
Cover the spinach-ricotta filled pasta pipe with the tomato sauce
Place the mozzarella cheese slices on top
Put the form in the middle of the oven for about 20 minutes