Heat oven to 200C/180C fan/
gas 6. Tip the oil into an ovenproof
casserole dish. Add bacon and fry
for 2 mins. Add the leeks and cook
until soft, but not coloured, for
about 4-5 mins. Tip in rice and cook
for 1 min more. Pour over stock.
Cover and place in the oven for
20 mins, stirring halfway.
When rice is just tender and all
liquid is absorbed, remove from
oven and stir in peas. Place back in
oven for 2 mins more. Remove and
stir in cheese. Add zest and season.