In large bowl, mix beef, parmesan, egg and spices. Make mixture into walnut sized meatballs

Heat oil in a frying pan and fry the meatballs until cooked through and browned.

Turn down heat and add tomatoes and chives. Allow to simmer 15-20 minutes

In a separate frying pan, melt butter and fry spinach for 2 minutes then add to meatballs,

Put the meatballs onto a serving plate; spread mozzarella over meatballs