Preheat oven to 180C/160Cfan/gas mark 4
Thinly slice the courgette and onions using a mandolin
Add to a baking dish, along with paprika, oregano and optional red chilli flakes (if you want a bit of a kick)
Drizzle olive oil and mix well
Slice the top off a whole bulb of garlic, also drizzle with olive oil, and place in the dish
Cover with foil and place in oven
Take out of oven at 30 mins, mix well and cover and place back into oven
Check progress in another 15/20 mins
Once caramelised to your liking, squeeze out the garlic into the tray and smush together with a fork
Add in lemon zest, salt, pepper, fresh parsley and cream - mix well
Add in cooked pasta along with 1 cup of reserved pasta water
Mix well and serve, add a little more pasta water if not serving immediately as the pasta sauce thickens as it cools
