Step 1

Chop any green leafy fennel fronds and set aside. Cut off the stalk-like fennel top, remove the outer layers and finely chop both. Heat 1 tbsp butter in a frying pan and cook the onion, garlic and chopped fennel until soft but not coloured.

Step 2

Add the rice and stir for 1 min. Pour over most of the wine and simmer until evaporated. Add 500ml of the hot stock, a ladleful at a time, stirring between each addition until it is absorbed.

Step 3

Meanwhile, slice remaining fennel and fry in knob of butter until browned. Add remaining stock and wine and cook until tender.

Step 4

When the rice is cooked, stir in the zest, Parmesan and some seasoning. Take off the heat and set aside, covered, for 2 mins. Serve in bowls, topped with the fennel fronds and cooked fennel, stirring the prawns through if using.