Pizza Di Frittata

Directions

1. 1
   Heat the olive oil in a frying pan with a diameter of about 9in and fry the onion until golden.
2. 2
   Add the spinach and cook until wilted.
3. 3
   Season to taste with salt and freshly ground black pepper.
4. 4
   Add the cherry tomatoes and cook for 1 minute.
5. 5
   Beat the eggs in a large bowl, add the milk and season with salt and freshly ground black pepper.
6. 6
   Pour the eggs on to the spinach mixture and cook for 4-5 minutes until the frittata starts to set.
7. 7
   Break the mozzarella ball roughly and scatter on top.
8. 8
   Place under a hot broiler for about 2 minutes, until the cheese has melted.
9. 9
   Place the frittata on a large plate, cut into slices like a pizza and serve immediately.