Step 1

Peel the onions and put in a pan of water with a  little salt

Step 2

Bring to the boil and simmer for 25 minutes until soft.

Step 3

Drain the onions and leave to cool

Step 4

Preheat the oven to 200C 400F Gas Mark 6.

Step 5

Grease a casserole dish with some butter.

Step 6

Grate the cheese

Step 7

Chop the onions into rough segments and add to the casserole dish with half the cheese.

Step 8

Season with black pepper

Step 9

Add the cream and top with the remaining cheese.

Step 10

Bake for 25-30 minutes until golden.