Colour the broccoli in a little olive oil in a pan. Turn down the heat down low until the broccoli is cooked through, moving it around the pan. Season to taste and set aside
Bring a large pan of water to a rolling boil, add the cavolo stems and cook for 3-4 mins. Then add the leaves and cook for another 1-2 mins. Drain and place in the blender with the pine nuts, olive oil, lemon & Parmesan - blend to pesto consistency and season to taste
Mix the beans & pesto, spoon into a bowl, top with the broccoli, torn mozzarella, lemon zest & extra pine nuts
