Boil the pasta with the sliced leek for 7 mins, then add the broccoli and boil for 5 mins until everything is just tender.

Meanwhile, heat the oil from the anchovies and fry the red pepper with the rosemary, chilli and garlic in a large non-stick pan for 5 mins until softened.

Drain the pasta, reserving a little water, then tip the pasta and veg into the pan and add the lemon juice and zest, anchovies and ricotta. Toss well over the heat, using the pasta water to moisten. Toss through the sunflower seeds and serve.