I have been making versions of this dish for over 20 years, after first trying roasted vegetables with pasta at a restaurant in Islington back in the 1990s.
In that time, I've experimented with different vegetable combinations and sometimes throw in some asparagus, if there's some lurking in the fridge. Courgettes are an obvious choice, but they tend to go a little soggy if you include them too early in the roasting time.
Initially, I used chilli oil for added flavour and heat, but now prefer to use chorizo - although if you wish to make a vegetarian version, then this is a good alternative. More recently I've swapped cubes of mozzarella for haloumi, as it's a lovely change of texture and is delicious when crispy from roasting.
Serves 4
2 tbs of extra virgin olive oil
2 medium red onions
1 red pepper
1 yellow pepper
200g cherry tomatoes
100g chestnut mushrooms
1 pack of Haloumi
110g cooking chorizo
Handful of fresh basil leaves
200g - 300g penne dried pasta
Fresh parmesan
Rocket (optional)