These savoury tarts with ricotta and spinach are perfect for a buffet or drinks party. I use a 24 mini-muffin mould and they are just the right size!
Parmesan cheese is not truly vegetarian, as it contains animal rennet. To make this dish 100% vegetarian, omit the cheese or find a suitable vegetarian substitute made without animal rennet. In supermarkets look for the 'parmesan style hard cheeses' which are suitable for vegetarians.