Broccoli spinach cheese and leek bake

1) Pre-heat the oven to 180C
2) Melt the 50g butter in a pan, add the flour and mix well.
3) Add the milk and whisk until smooth.
4) Grate the cheese and add to the sauce, stir until melted.
5) Saute the leeks in the remaining butter and the rapeseed oil until soft and add the spinach until wilted.
6) In a baking dish add the spinach and leeks and mix with the chopped broccoli.
7) Pour over the cheese sauce and bake in the oven for 30 minutes.
8) You can sprinkle over some more grated cheddar for a cheesy crust.