Heat oil in a large pan over medium heat.
Add onion and cook, stirring occasionally, for 5 minutes or until light golden.
Add sausage 'meat' and garlic to pan and cook for 3-4 minutes, breaking the meat up with a wooden spoon, until browned.
Add rosemary, chilli, passata and stock.
Season, reduce heat to low and cook for 15-20 minutes until 'meat' is cooked.
Meanwhile, cook pasta according to packet instructions. Drain. Add to sauce.
Stir parsley and cream into sauce just before serving.
Scatter with parmesan.