Grease and preheat a large baking sheet
Unroll your pastry and lay onto the baking sheet. Score a 2cm border around the pastry with a sharp knife.
Bake for 15-20 minutes at 200 (fan 180) deg C
Soften the onion and garlic over a low heat for around 10 minutes, then set aside
Squeeze the meat out of the sausages to make tiny meatballs
Brown the meatballs for around 5 minutes to seal
Blanche the broccoli for around 2 minutes to soften
Whisk the olive oil and balsamic vinegar and turn the tomatoes in it before removing. Retain the mixture for drizzling
When the pastry is ready, spread the onion mixture, then the grated parmesan inside the scored area
Add the browned meatballs, then arrange your veg evenly over the tart.
Bake for a further 15-20 minutes. Finish with the shaved parmesan and the olive oil and balsamic dressing.