Add the onions into a pan on medium heat for around 5-8 minutes with a teaspoon of olive oil, then add garlic and cook for 2-3 minutes

Place the pancetta into the pan and cook until crispy

Add chilli, tomatoes, butter and rosemary and cover until the tomatoes are soft. This takes around 15 minutes

Cook the pasta as per instructions

Add the prawns to the sauce and cook for 3-4 minutes

Drain the pasta and add to the sauce

Mix and serve with the grated Dromona Cheddar