In a large frying pan, heat half of the olive oil. Add the leek and onion and sauté until softened and lightly browned.
Add the garlic, chilli flakes and calamari. Season with salt and pepper and sauté until the calamari changes colour.
Add the cherry tomatoes and bring to a simmer, allowing them to cook until they begin to release their juices.
Add the short-cut pasta and the remaining olive oil. Stir well so that the pasta absorbs all the wonderful flavours from the pan.
Pour in the wine and stir. Let it simmer for about one minute, then add the parsley and 500 ml of the vegetable stock.
Reduce the heat and simmer, stirring occasionally and adding more stock as needed, until the pasta is cooked. The finished dish should be juicy and saucy, not dry.
Finally, add the spinach and rocket leaves. Stir well and adjust the seasoning with salt and pepper, if needed.
Serve immediately.