Ingredients:
* 1 quantity Potato Pizza Dough, with Parmesan cheese, shaped and ready for topping
Topping:
* 2 tablespoons vegetable oil
* 60g (2oz) rashers streaky bacon, chopped
* 1 onion, finely chopped
* 1 carrot, finely chopped
* 1 stick celery, finely chopped
* 1 clove garlic, crushed
* 250g (8oz) ground beef
* 1 tablespoon tomato puree (paste)
* pinch of mixed herbs
* 125 ml (4 fl oz / 1/2 cup) beef stock
* salt and pepper
To serve:
* freshly grated Parmesan cheese
* tomato and marjoram sprigs, to garnish