Finely chop the onions and boil in a saucepan for 5 minutes with the brocolli. Tip into an oven dish with the sweetcorn and butter beans. Add black pepper and mix well.
Make the white sauce and pour over the top.
Spread the mash on top and put a light sprinkling of salt over.
Cook in a preheated oven at gas mark 7 for 20 minutes so it is nice and crispy on the top. |
