Chorizo and Prawn Pasta

Is it winter where you are in the world? If so, this is for you! This hearty, warm and tasty pasta dish is a perfect winter warmer :)

400g casarecce pasta (Don't have to use this, plain ol' spaghetti is just as good!) 
1 medium chorizo, sliced thinly (I like the chilli ones!)
400g napoletana sauce (or passata)
1 small brown onion, diced
2 garlic cloves, crushed 
200g small cooked prawns, deveined and tails off
10 large basil leaves, torn 
generous pinch of salt & pepper 
2 cups baby spinnach
1/2 tsp. chilli flakes (optional)
1 cup water 
2 tbsp. extra virgin olive oil
Parmesan to serve

Cook pasta according to packet instructions.
In a deep pan, heat olive oil over a high heat. 
Add onion and garlic to the pan and stir for 2-3 minutes. 
Add Chorizo and cook for 5 minutes, or until lightly browned. 
Add Napoletana sauce, water, salt and pepper. Leave to simmer for 5 minutes. 
Add prawns and spinach and cook for 3-4 minutes. Don't leave for too much longer as you can over cook the prawns and they may become rubbery. 
Tear basil leaves through and add cooked pasta. 
Sprinkle with parmesan and serve hot!