Fry (sauté) the onion and pepper in the butter for 3
minutes until soft and slightly golden.
Add the meat and cook, stirring, until all the
grains are brown and separate. Stir in the flour and
cook for 1 minute. Add the passata and stock.
Season well and bring to the boil, stirring. Reduce
the heat and simmer for 10 minutes. Stir in the
mushrooms and cook for a further 2 minutes.
Meanwhile, cook the rotelli according to the packet
directions. Drain. Arrange the pasta around the edge
of a large flameproof dish.
Spoon the meat mixture into the centre. Sprinkle the
pasta liberally with the cheese and flash under a
hot grill (broiler) until the cheese melts. Serve
straight away.