Step 1.
Start by chopping your onions into semi-circular discs before adding them to a frying pan, along with a large glug of olive oil and the chilli flakes.
Chop up the courgettes and add to the pan before beginning to fry gently on low heat to allow the vegetables to soften.
Step 2.
As the onions and courgettes are frying - get the pasta on. Remember to save a cup of pasta water for later, as you will need it.
Step 3.
Once the onions are brown and soft, add the white wine to the pan, turning the heat up slightly so the mixture simmers and bubbles gently. Stir well before adding the pot of double cream to the vegetables, combining thoroughly.
Step 4.
As the mixture is simmering, add a sprinkle of salt and pepper and the zest of the lemon before combining again.
After another minute of stirring whilst it simmers, add the juice of the lemon to the mixture.
Step 5.
Once the pasta is cooked, pour it into the pan, stirring it so it becomes fully coated in the creamy sauce. Add the pasta water to loosen the sauce slightly so it becomes silky and smooth.
Step 6.
Grate the Parmesan, adding two-thirds of this to the pasta mixture. Chop up your basil, also adding two-thirds to the pan.
Stir well. Serve immediately, garnishing with the remaining parmesan and basil!